"People are really aggravated at the government right now," McCaskill said. "There are a lot of people that are just going, 'Really? You guys can't get anything done? All you do is fight.'"
McCaskill, who previously called the Vermont independent senator "too liberal" to win the Democratic nomination, also noted that both men have so far avoided super PAC ties. Trump is mainly financing himself, and Sanders refuses to accept support from a super PAC.
"I think the chord that we are touching all over the country is that people are profoundly disgusted with the economics that make the richest people richer and everybody else poorer," Sanders said.
Trump is -- as he often reminds people -- very, very rich.
McCaskill's comments came on the same day that Sanders topped Clinton in a New Hampshire poll.
How to vote
Vote-by-mail ballot request deadline: Varies by state
For the Nov 3 election: States are making it easier for citizens to vote absentee by mail this year due to the coronavirus. Each state has its own rules for mail-in absentee voting. Visit your state election office website to find out if you can vote by mail.Get more information
In-person early voting dates: Varies by state
Sometimes circumstances make it hard or impossible for you to vote on Election Day. But your state may let you vote during a designated early voting period. You don't need an excuse to vote early. Visit your state election office website to find out whether they offer early voting.My Election Office
General Election: Nov 3, 2020
Polling hours on Election Day: Varies by state/localityMy Polling Place