Republican voters are never going to change their preference to a democratic candidate based on who the Democratic candidate is. The people who have potential to vote for Democrats aren’t undecided in who they prefer, they’re undecided if they even care enough to vote at all. Getting more people motivated to vote who didn’t vote in the prior election is the only way to gain votes. That’s true for any Democratic or Republican candidate for president. Presidential candidates need to make sure that people who voted in the last election fir their party’s candidate don’t become interested in voting in the current election.

The tough on crime reputation Harris has may demotivate otherwise likely voters for a Democratic candidate.