Federal law 3 U.S.C.Â§Â§1-21 let's let the actual Constitution tell you. Article II, Section 1 of the U.S. Constitution Constitutional provision set out in the Constitution. US Electoral College - Presidential Election Laws states get to decide http://www.archives.gov/federal-register/elec... Federal law U.S. Constitution Federal law Federal laws Presidential election laws U.S. Constitution provides Federal laws Federal law US CODE TITLE 3, Ch.1 Constitutional provision the Founding fathers created the Electoral College Article II, section 1, clause 2 Federal law Constitution Constitution U.S. Constitution U.S. Constitution Constitution Constitution www.archives.gov/...provisions.html Congress Constitution Constitutional provision 12th Amendment U.S. Constitution United States Code, Title 3, Chapter 1 provides Article II, section 1, clause 2 would require the approval of three-fourths of the states U.S. Constitution Federal laws 12th Amendment to the Constitution U.S. Constitution Federal law U.S. Constitution Constitutional provision U.S. Constitution United States Code, Title 3 chapter 1 Federal presidential election laws Constitutional provision set out in the Constitution. Constitutional provision Constitutional provision set out in the Constitution. Article II, section 1, clause 2 Constitution Federal laws Article II, section 1, clause 2 Constitution the Founding fathers created the Electoral College 12th Amendment Federal law U. S. Electoral College U.S. Constitution states get to decide Twelfth Amendment Constitution THE CONSTITUTION Article II