Where Iowa Voters Stand Ahead of Tonight's Highly-Anticipated Caucus

Democratic presidential candidates have been blitzing the state of Iowa in a frenzied finish before voters cast their ballots in tonight's first-in-the-nation caucus. Four candidates are locked in a tight race.

The Democratic hopefuls have been hosting multiple events and covering hundreds of miles desperate to win over those last-minute votes. Thousands of Iowans and political tourists crammed into large venues to hear directly from candidates one last time ahead of Monday's vote.

After being stuck in impeachment hearings in Washington all week, Sen. Elizabeth Warren (D-MA) made up for...