The electors, elected under this Article, shall meet at the office of the Secretary of State in a room to be designated by the Secretary in the Capitol at Springfield in this State, at the time appointed by the laws of the United States at the hour of ten o’clock in the forenoon of that day, and give their votes for President and for Vice-President of the United States, in the manner provided in this Article, and perform such duties as are or may be required by law. Each elector shall receive an allowance for food and lodging equal to the amount per day permitted to be deducted for such expenses under the Internal Revenue Code, plus a mileage allowance at the rate in effect under regulations promulgated pursuant to 5 U.S.C. § 5707(b)(2) for the number of highway miles necessarily and conveniently traveled, for going to the seat of government to give his or her vote and returning to his or her residence and otherwise performing the official duties of an elector, to be paid on the warrant of the State Comptroller, out of any money in the treasury not otherwise appropriated, and any person appointed by the electors assembled to fill a vacancy shall also receive the allowances provided for electors appointed.