Article I Section 2

The House of Representatives shall be composed of Members chosen every second
Year by the People of the several States, and the Electors in each State
shall have the Qualifications requisite for Electors of the most numerous
Branch of the State Legislature. 

No Person shall be a Representative who shall not have attained to the Age of
twenty five Years, and been seven Years a Citizen of the United States, and
who shall not, when elected, be an Inhabitant of that State in which he shall
be chosen. 

Representatives and direct Taxes shall be apportioned among the several
States which may be included within this Union, according to their respective
Numbers, which shall be determined by adding to the whole Number of free
Persons, including those bound to Service for a Term of Years, and excluding
Indians not taxed, three fifths of all other Persons. 

The actual Enumeration shall be made within three Years after the first
Meeting of the Congress of the United States, and within every subsequent
Term of ten Years, in such Manner as they shall by Law direct. The Number of
Representatives shall not exceed one for every thirty Thousand, but each
State shall have at Least one Representative; and until such enumeration
shall be made, the State of New Hampshire shall be entitled to chuse three,
Massachusetts eight, Rhode Island and Providence Plantations one, Connecticut
five, New York six, New Jersey four, Pennsylvania eight, Delaware one,
Maryland six, Virginia ten, North Carolina five, South Carolina five and
Georgia three. 

When vacancies happen in the Representation from any State, the Executive
Authority thereof shall issue Writs of Election to fill such Vacancies. 

The House of Representatives shall chuse their Speaker and other Officers;
and shall have the sole Power of Impeachment.