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 lost time on the campaign trail by recruiting her dog Bailey, known as her "furrogate", to stand in her place in her famous post-rally selfie line.

"It's going to take some big structural change are you ready for that?" Warren asked an enthusiastic crowd.

Nearby, former Vice President Joe Biden addressed a packed gymnasium touting a message of unity. "I refuse to accept the notion that we're going to be in total chaos and war with the other side because we're done if that's true," commented Biden.

But he also went on the attack against President Trump.

"In a room with our flag officers and generals, he looked them in the eye and referred to them as losers, dopes, and babies – who in God's name does he think he is talking to our people like that?" questioned Biden. "To state the obvious, this commander in chief not only doesn't understand it but if he does he's the most calloused son of a gun we've ever had as president."

A day before the caucus, many voters like Daryl Hagans of Des Moines told CBN News they're still undecided.