RED OAK, IA - NOVEMBER 04:  Voters fill in their ballots on election day at the Red Oak Fire Department November 4, 2014 in Red Oak, Iowa. According to the polls, Republican U.S. Senate candidate Joni Ernst is in a neck-and-neck race with Democratic candidate Rep. Bruce Braley (D-IA), and the election in Iowa could decide which party controls the U.S. Senate.  (Photo by Chip Somodevilla/Getty Images)