§ 6. The Senators shall hold their places during good behaviour, removable only by conviction on impeachment for some crime or misdemeanor. They shall continue to exercise their offices when impeached untill a conviction shall take place. Sixteen Senators attending in person shall be sufficient to make a House to transact business; but the Legislature may increase this number, yet so as never to exceed a majority of the whole number of Senators. The Senators may vote by proxy, but no Senator who is present shall be proxy for more than two who are absent. § 7. The Senate shall choose its President and other officers; shall judge of the qualifications and elections of its members, and shall punish them for improper conduct in their capacity of Senators; but such punishment shall not extend to life or limb, nor to expulsion. In the absence of their President they may choose a temporary President. The President shall only have a casting vote when the House is equally divided. § 8. The Senate shall exclusively possess the power of declaring war. No treaty shall be made without their advice and consent; which shall also be necessary to the appointment of all officers, except such for which a different provision is made in this Constitution. ARTICLE IV § 1. The President of the United States of America, (except in the first instance) shall be elected in the manner following--The Judges of the Supreme Court shall within sixty days after a vacancy shall happen, cause public notice to be given in each State, of such vacancy, appointing therein three several days for the several purposes following, to wit, a day for commencing the election of electors for the purposes hereinafter specified, to be called the first electors, which day shall not be less than forty, nor more than sixty days, after the day of the publication of the notice in each State--another day for the meeting of the electors not less [than] forty nor more than ninety days from the day for commencing their election--another day for the meeting of electors to be chosen by the first electors, for the purpose hereinafter specified, and to be called the second Electors, which day shall be not less than forty nor more than sixty days after the day for the meeting of the first electors.