After all the ads, rallies, and canvassing, now there's nothing left but for Iowa's voters to finally have their say Monday night at the critical first-in-the nation caucuses.<br />On the Democratic side, Hillary Clinton and Bernie Sanders are locked in a tight race in the state that will help set the trajectory of the rest of the nominating contest.<br />A win for Sanders would be a major upset that could carry his insurgent candidacy deep into the spring, while a win for Clinton would blunt Sanders' rise and help put her on a glide path to the Democratic nomination.<br />It's a cliché, but this time it's true: The race will likely be decided by turnout.<br />If the total number of caucus-goers is close to the 240,00 that showed up on the Democratic side in 2008, Sanders could win.<br />But if turnout is closer to the 125,00 that came out in 2004, Clinton is the favorite.
