Section 1. The legislative power shall be vested in a Legislative Assembly, which shall consist of two houses, the Senate and the House of Representatives, whose members shall be elected by direct vote at each general election.

Section 2, The Senate shall be composed of twenty-seven Senators and the House of Representatives of fifty-one Representatives, except as these numbers may be increased in accordance with the provisions of Section 7 of this Article.

Section 3. For the purpose of election of members of the Legislative Assembly, Puerto Rico shall be divided into eight senatorial districts and forty representative districts. Each senatorial district shall elect two Senators and each representative district one Representative.

There shall also be eleven Senators and eleven Representatives elected at large. No elector may vote for more than one candidate for Senator at Large or for more than one candidate for Representative at Large.

Section 4. In the first and subsequent elections under this Constitution the division of senatorial and representative districts as provided in Article VIII shall be in effect. After each decennial census beginning with the year 1960, said division shall be revised by a Board composed of the Chief Justice of the Supreme Court as Chairman and of two additional members appointed by the Governor with the advice and consent of the Senate. The two additional members shall not belong to the same political party. Any revision shall maintain the number of senatorial and representative districts here created, which shall be composed of contiguous and compact territory and shall be organized, insofar as practicable, upon the basis of population and means of communication. Each senatorial district shall always include five representative districts.

The decisions of the Board shall be made by majority vote and shall take effect in the general elections next following each revision. The Board shall cease to exist after the completion of each revision.

Section 5. No person shall be a member of the Legislative Assembly unless he is able to read and write the Spanish or English language and unless he is a citizen of the United States and of Puerto Rico and has resided in Puerto Rico at least two years immediately prior to the date of his election or appointment. No person shall be a member of the Senate who is not over thirty years of age, and no person shall be a member of the House of Representatives who is not over twenty-five years of age.

Section 6. No person shall be eligible to election or appointment as Senator or Representative for a district unless he has resided therein at least one year immediately prior to his election or appointment. When there is more than one representative district in a municipality, residence in the municipality shall satisfy this requirement.

Section 7. If in a general election more than two-thirds of the members of either house are elected from one political party or from a single ticket, as both are defined by law, the number of members shall be increased in the following cases:

(a) If the party or ticket which elected more than two-thirds of the members of either or both houses shall have obtained less than two-thirds of the total number of votes cast for the office of Governor, the number of members of the Senate or of the House of Representatives or of both bodies, whichever may be the case, shall be increased by declaring elected a sufficient number of candidates of the minority party or parties to bring the total number of members of the minority party or parties to nine in the Senate and to seventeen in the House of Representatives. When there is more than one minority party, said additional members shall be declared elected from among the candidates of each minority party in the proportion that the number of votes cast for the candidate of each of said parties for the office of Governor bears to the total number of votes cast for the candidates of all the minority parties for the office of Governor.

When one or more minority parties shall have obtained representation in a proportion equal to or greater than the proportion of votes received by their respective candidates for Governor, such party or parties shall not be entitled to additional members until the representation established for each of the other minority parties under these provisions shall have been completed.

(b) If the party or ticket which elected more than two-thirds of the members of either or both houses shall have obtained more than two-thirds of the total number of votes cast for the office of Governor, and one or more minority parties shall not have elected the number of members in the Senate or in the House of Representatives or in both houses, whichever may be the case, which corresponds to the proportion of votes cast by each of them for the office of Governor, such additional number of their candidates shall be declared elected as is necessary in order to complete said proportion as nearly as possible, but the number of Senators of all the minority parties shall never, under this provision, be more than nine or that of Representatives more than seventeen.

In order to select additional members of the Legislative Assembly from a minority party in accordance with these provisions, its candidates at large who have not been elected shall be the first to be declared elected in the order of the votes that they have obtained, and thereafter its district candidates who; not having been elected, have obtained in their respective districts the highest proportion of the total number of votes cast as compared to the proportion of votes cast in favor of other candidates of the same party not elected to an equal office in the other districts.

The additional Senators and Representatives whose election is declared under this section shall be considered for all purposes as Senators at Large or Representatives at Large.

The measures necessary to implement these guarantees, the method of adjudicating fractions that may result from the application of the rules contained in this section, and the minimum number of votes that a minority party must cast in favor of its candidate for Governor in order to have the right to the representation provided herein shall be determined by the Legislative Assembly.

Section 8. The term of office of Senators and Representatives shall begin on the second day of January immediately following the date of the general election in which they shall have been elected. If, prior to the fifteen months immediately preceding the date of the next general election, a vacancy occurs in the office of Senator or Representative for a district, the Governor shall call a special election in said district within thirty days following the date on which the vacancy occurs. This election shall be held not later than ninety days after the call, and the person elected shall hold office for the rest of the unexpired term of his predecessor. When said vacancy occurs during a legislative session, or when the Legislative Assembly or the Senate has been called for a date prior to the certification of the results of the special election, the presiding officer of the appropriate house shall fill said vacancy by appointing the person recommended by the central committee of the political party of which his predecessor in office was a member. Such person shall hold the office until certification of the election of the candidate who was elected. When the vacancy occurs within fifteen months prior to a general election, or when it occurs in the office of a Senator at Large or a Representative at Large, the presiding officer of the appropriate house shall fill it, upon the recommendation of the political party of which the previous holder of the office was a member, by appointing a person selected in the same manner as that in which his predecessor was selected. A vacancy in the office of a Senator at Large or a Representative at Large elected as an independent candidate shall be filled by an election in all districts.

Section 9. Each house shall be the sole judge of the election, returns and qualifications of its members; shall choose its own officers; shall adopt rules for its own proceedings appropriate to legislative bodies; and, with the concurrence of three-fourths of the total number of members of which it is composed, may expel any member for the causes established in Section 21 of this Article, authorizing impeachments. The Senate shall elect a President and the House of Representatives a Speaker from among their respective members.

Section 10. The Legislative Assembly shall be deemed a continuous body during the term for which its members are elected and shall meet in regular session each year commencing on the second Monday in January. The duration of regular sessions and the periods of time for introduction and consideration of bills shall be prescribed by law. When the Governor calls the Legislative Assembly into special session it may consider only those matters specified in the call or in any special message sent to it by him during the session. No special session shall continue longer than twenty calendar days.

Section 11. The sessions of each house shall be open.

Section 12. A majority of the total number of members of which each house is composed shall constitute a quorum, but a smaller number may adjourn from day to day and shall have authority to compel the attendance of absent members.

Section 13. The two houses shall meet in the capitol of Puerto Rico and neither of them may adjourn for more than three consecutive days without the consent of the other.

Section 14. No member of the Legislative Assembly shall be arrested while the house of which he is a member is in session, or during the fifteen days before or after such session, except for treason, felony or breach of the peace. The members of the Legislative Assembly shall not be questioned in any other place for any speech, debate or vote in either house or in any committee.

Section 15. No Senator or Representative may, during the term for which he was elected or chosen, be appointed to any civil office in the Government of Puerto Rico, its municipalities or instrumentalities, which shall have been created or the salary of which shall have been increased during said term. No person may hold office in the Government of Puerto Rico, its municipalities or instrumentalities and be a Senator or Representative at the same time. These provisions shall not prevent a member of the Legislative Assembly from being designated to perform functions ad honorem.

Section 16. The Legislative Assembly shall have the power to create, consolidate or reorganize executive departments and to define their functions.

Section 17. No bill shall become a law unless it has been printed, read, referred to a committee and returned therefrom with a written report, but either house may discharge a committee from the study and report of any bill and proceed to the consideration thereof. Each house shall keep a journal of its proceedings and of the voters cast for and against bills. The legislative proceedings shall be published in a daily record in the form determined by law. Every bill, except general appropriation bills, shall be confined to one subject, which shall be clearly expressed in its title, and any part of an act whose subject has not been expressed in the title shall be void. The general appropriation act shall contain only appropriations and rules for their disbursement. No bill shall be amended in a manner that changes its original purpose or incorporates matters extraneous to it.

In amending any article or section of a law, said article or section shall be promulgated in its entirety as amended. All bills for raising revenue shall originate in the House of Representatives, but the Senate may propose or concur with amendments as on other bills,

Section 18. The subjects which may be dealt with by means of joint resolution shall be determined by law, but every joint resolution shall follow the same legislative process as that of a bill.

Section 19. Every bill which is approved by a majority of the total number of members of which each house is composed shall be submitted to the Governor and shall become law if he signs it or if he does not return it, with his objections, to the house in which it originated within ten days (Sundays excepted) counted from the date on which he shall have received it.

When the Governor returns a bill the house that receives it shall enter his objections on its journal and both houses may reconsider it. If approved by two-thirds of the total number of members of which each house is composed, said bill shall become law.

If the Legislative Assembly adjourns sine die before the Governor has acted on a bill that has been presented to him less than ten days before, he is relieved of the obligation of returning it with his objections and the bill shall become law only if the Governor signs it within thirty days after receiving it.

Every final passage or reconsideration of a bill shall be by a roll-call vote.

Section 20. In approving any appropriation bill that contains more than one item, the Governor may eliminate one or more of such items or reduce their amounts, at the same time reducing the total amounts involved.

Section 21. The House of Representatives shall have exclusive power to initiate impeachment proceedings and, with the concurrence of two-thirds of the total number of members of which it is composed, to bring an indictment. The Senate shall have exclusive power to try and to decide impeachment cases, and in meeting for such purposes the Senators shall act in the name of the people and under oath or affirmation. No judgment of conviction in an impeachment trial shall be pronounced without the concurrence of three-fourths of the total number of members of which the Senate is composed, and the judgment shall be limited to removal from office. The person impeached, however, may be liable and subject to indictment, trial, judgment and punishment according to law. The causes of impeachment shall be treason, bribery, other felonies, and misdemeanors involving moral turpitude. The Chief Justice of the Supreme Court shall preside at the impeachment trial of the Governor.

The two houses may conduct impeachment proceedings in their regular or special sessions. The presiding officers of the two houses, upon written request of two-thirds of the total number of members of which the House of Representatives is composed, must convene them to deal with such proceedings.

Section 22. The Governor shall appoint a Controller with the advice and consent of a majority of the total number of members of which each house is composed. The Controller shall meet the requirements prescribed by law and shall hold office for a term of ten years and until his successor has been appointed and qualifies. The Controller shall audit all the revenues, accounts and expenditures of the Commonwealth, of its agencies and instrumentalities and of its municipalities, in order to determine whether they have been made in accordance with law. He shall render annual reports and any special reports that may be required of him by the Legislative Assembly or by the Governor.

In the performance of his duties the Controller shall be authorized to administer oaths, take evidence and compel under pain of contempt, the attendance of witnesses and the production of books, letters, documents, papers, records and all other articles deemed essential to a full understanding of the matter under investigation.

The Controller may be removed for the causes and pursuant to the procedure established in the preceding section.