I am going to say this once for the US 2026 primaries, once for the 2026 general, and once again for the 2028 presidential primaries, which have already started:
There is no such thing as a spoiler. Our democracy is stronger when there are more choices and diverse points of view on the ballot. If you want to get a candidate's voters, earn them. Copy the candidate's policy ideas and make them your own. If you don't want to, they're not your votes.