In the past few weeks, the U.S. Senate races of 2014 have started to take shape.
Elizabeth Cheney, daughter of the former vice president, announced that she would take on Sen. Mike Enzi of Wyoming in a Republican primary. Senate Republican leader Mitch McConnell of Kentucky got a challenger, too, in businessman Matt Bevin. And Rep. Tom Cotton, an Arkansas Republican, has decided to run against incumbent Democratic Sen. Mark Pryor.
What's going to get the most attention, appropriately, is whether Republicans can retake the Senate. (More on that in a bit.) But there are other questions at stake in the election, and we'll find out some answers as the races develop.