Udall is seeking re-election in Colorado. (Tom Williams/CQ Roll Call File Photo)
Control of the Senate comes down to just a few states, with Republicans in a position to pick up the necessary net six seats to win the majority.
As the results pour in Tuesday evening, here are the counties to watch in five of the most contested Senate races: Colorado, Iowa, North Carolina, Kansas, and Georgia.
Colorado: Arapahoe County and Jefferson County
These two Denver suburbs have served as bellwethers for statewide results in recent years, and probably will again as Sen. Mark Udall, a Democrat, fights to fend off Rep. Cory Gardner, a Republican.
Jefferson County’s results in the past six cycles have mirrored the statewide results within a percentage point. Arapahoe is another strong indicator of the statewide results in past years, but it’s also a county where there’s often drop off in voters between presidential years and midterms. If the number of votes coming in from Arapahoe look similar to the vote total from 2012, it could be a good night for the Democrats. Full story