It's vote-stealing because the GOP wouldn't be doing it if they thought they could win otherwise. I mean, if you want to get cute about it and argue semantics, then fine. But the whole purpose of this scheme is to find a way to win presidential elections even though an ever larger majority of the population will want to vote for the other party. If you consider that to be legitimate, then you're the only one. Even the people doing it know they're trying to game the system.