NECN political commentator Sue O'Connell and Jennifer Horn, co-founder of The Lincoln Project, joined Boston Public Radio on Tuesday in Manchester, N.H. Many voters still haven't made up their minds yet about who to vote for, O'Connell said.

"I think that there's an authenticity about the fact that folks haven't made up their minds yet," she said. "I actually think some people are really on the fence, so I think there's going to be a big turnout today."

Horn said she hopes that Democrats put forward a candidate that can unite people across ideologies.

"My greatest hope is that the Democrats will nominate a candidate that can build cross-party coalitions — Independents, Republicans and Democrats — because if they do anything other than that, they will lose in November," she said.