Seth Moulton: Democrats must stop "rehashing votes from 40 years ago"

Moulton's stance comes in contrast to other Democratic colleagues, most notably Sen. Kamala Harris, whose debate-night spat with Biden was followed by significant polling shifts in her favor.

• Biden has since apologized for his comments, with Harris telling reporters Sunday that she accepts the gesture and is "going to take him at his word," according to the Post and Courier.

What they're saying:

"If we spend all our time rehashing votes from 40 years ago in Congress, rather than putting forward a positive vision for America, with realistic plans for how we can achieve all of our goals, then I think it's going to be real tough election for us,"

Between the lines: Moulton didn't qualify for the first round of debates and is unlikely to appear in the second, but insists his campaign is in it for the long haul.

Go deeper: Seth Moulton on the issues, in under 500 words