Senate Minority Leader Mitch McConnell of Ky., and his wife, former Labor Secretary Elaine Chao, arrive to cast their ballots in the midterm election at their voting precinct at Bellarmine University in Louisville, Ky., Tuesday, Nov. 4, 2014.  The Kentucky Senate race, with McConnell, a 30-year incumbent, facing a spirited challenge from Democrat Alison Lundergan Grimes, has been among the most combative and closely watched contests that could shift the balance of power in Congress. (AP Photo/J. Scott Applewhite)