Nevada voters will play a big part in today's election, as we will choose a replacement for Sen. Harry Reid in a race that could decide which party controls the U.S. Senate. While polls are open for 12 hours starting at 7 a.m., nearly 53 percent of Nevada's 1.5 million active registered voters have already weighed in through in-person early voting or absentee ballots. Democrats have a six-point lead over Republicans in early voting turnout, but Republicans hold out hope that they'll overcome that deficit today, when they traditionally outperform Democrats.