Let's call them Harris Republicans
In 1980 a segment of Democrats voted for Reagan in numbers large enough to have given them a name in electoral history. That group was not recognized to any extent prior to the election and the moniker Reagan Democrat did not come about until the election aftermath. As a matter of fact polls were mixed and tight that fall regardless of their accuracy. There was no consistent evidence that there would be a Reagan landslide boosted in part by Reagan Democrats.
In 2024, a bloc of Republican voters pledged to vote for the Democratic nominee Kamala Harris. Many have become active to varying degrees as members of Republicans for Harris. What binds them is not a shift in their policy stances, but their disgust with the nominee of their party who one can surmise was supported by them in at least one of the two prior elections in which that candidate ran.
Interestingly, we have yet to reciprocally label the Republicans for Harris and their dissatisfied friends as Harris Republicans. Unlike the Reagan Democrats of 1980, Harris Republicans are a known electoral value prior to the election. Meanwhile no one clamoring for attention in the media field has wisely stuck the name Harris Republicans on this faction. Not that many conservatives pulling the lever for the Democratic nominee this go-round would be ecstatic about that label. It doesn't imply enough of the reluctance with which they're doing it. At least being called a Republican for Harris implies maintaining one's individual identity as a Republican first and foremost. Being called a Harris Republican, on the other hand, suggests that they are taken with Harris' magnetism which is not exactly the case with the great majority of them. They see Harris as a lesser of two evils.
But this shouldn't stop Harris surrogates from making reference to "the Harris Republicans," as it does suggest more of a policy preference. It could also suggest to other reluctant Republicans who may otherwise “stay home” to actually fill in the dot next to Harris/Walz on a ballot. In any event it would be refreshing after having heard the annoying term “Reagan Democrats” ad nauseum over the past 40+ years.