caucus

Democrats in Nevada have been scrambling to adjust their plans, in response to the debacle in Iowa. Early voting opens on Saturday with the state's full caucus set for one week later.

Iowa's results still aren't quite settled, but it's clear former South Bend, Ind., Mayor Pete Buttigieg and Vermont Sen. Bernie Sanders finished in what was essentially a tie. What does it all mean?

As Democrat Party officials and election security experts dissect what happened Tuesday in Iowa, concerns are growing that similar failures could occur elsewhere.