Article II Section 1

The executive Power shall be vested in a President of the United States of
America. He shall hold his Office during the Term of four Years, and,
together with the Vice-President chosen for the same Term, be elected, as
follows: 

Each State shall appoint, in such Manner as the Legislature thereof may
direct, a Number of Electors, equal to the whole Number of Senators and
Representatives to which the State may be entitled in the Congress: but no
Senator or Representative, or Person holding an Office of Trust or Profit
under the United States, shall be appointed an Elector. 

The Electors shall meet in their respective States, and vote by Ballot for
two persons, of whom one at least shall not lie an Inhabitant of the same
State with themselves. And they shall make a List of all the Persons voted
for, and of the Number of Votes for each; which List they shall sign and
certify, and transmit sealed to the Seat of the Government of the United
States, directed to the President of the Senate. The President of the Senate
shall, in the Presence of the Senate and House of Representatives, open all
the Certificates, and the Votes shall then be counted. The Person having the
greatest Number of Votes shall be the President, if such Number be a Majority
of the whole Number of Electors appointed; and if there be more than one who
have such Majority, and have an equal Number of Votes, then the House of
Representatives shall immediately chuse by Ballot one of them for President;
and if no Person have a Majority, then from the five highest on the List the
said House shall in like Manner chuse the President. But in chusing the
President, the Votes shall be taken by States, the Representation from each
State having one Vote; a quorum for this Purpose shall consist of a Member or
Members from two-thirds of the States, and a Majority of all the States shall
be necessary to a Choice. In every Case, after the Choice of the President,
the Person having the greatest Number of Votes of the Electors shall be the
Vice President. But if there should remain two or more who have equal Votes,
the Senate shall chuse from them by Ballot the Vice-President. 

The Congress may determine the Time of chusing the Electors, and the Day on
which they shall give their Votes; which Day shall be the same throughout the
United States. 

No person except a natural born Citizen, or a Citizen of the United States,
at the time of the Adoption of this Constitution, shall be eligible to the
Office of President; neither shall any Person be eligible to that Office who
shall not have attained to the Age of thirty-five Years, and been fourteen
Years a Resident within the United States. 

In Case of the Removal of the President from Office, or of his Death,
Resignation, or Inability to discharge the Powers and Duties of the said
Office, the same shall devolve on the Vice President, and the Congress may by
Law provide for the Case of Removal, Death, Resignation or Inability, both of
the President and Vice President, declaring what Officer shall then act as
President, and such Officer shall act accordingly, until the Disability be
removed, or a President shall be elected. 

The President shall, at stated Times, receive for his Services, a
Compensation, which shall neither be increased nor diminished during the
Period for which he shall have been elected, and he shall not receive within
that Period any other Emolument from the United States, or any of them. 

Before he enter on the Execution of his Office, he shall take the following
Oath or Affirmation: 

"I do solemnly swear (or affirm) that I will faithfully execute the Office of
President of the United States, and will to the best of my Ability, preserve,
protect and defend the Constitution of the United States."