The exercised their rights not to vote. The “losing” side always thinks that higher turnout would have led to them “winning” which of course is a cry of a sore loser. The fact remains, 2024 election had the highest voter turnout ever and people have spoken (till the next one when we might get a chance to elect some adults to fix this shit)
When you don't vote, you're really just voting for "whoever happens to win". So I count the non-voters among (R) supporters, or at least as "OK with Trump". Otherwise, they would have voted.