RFK Jr. had like three percent in polls as an independent candidate, so he went to Democrats with an offer to withdraw and endorse them in exchange for a healthcare position. Sure enough, nobody there even listened to that constantly choking nut. So he went with the same offer to Trump, who decided “yeah, sure, who cares”. The gag, of course, is that there's no guarantee that the three percent voted for Trump — they might've split evenly or all chosen Democrats.

However, I'm not sure what about that roadkill-eating conspiracy-theorist brainworm is Democrat.