Evidence from the martyrdom of the Apostles. The historical record is strong in suggesting that Peter and James (at least) were put to death for their belief in a resurrected Jesus, which seems unlikely if they had made the whole thing up.
People die for their beliefs all the time, regardless of it's rationality or it's 'truth'. People will die for a lie, even if held sincerely. I don't think it's a very good apologist argument.
But afleitch, why would Ashley Babbitt sacrifice herself if the election wasn't actually stolen?
Ashley Babbitt wasn't the one who came up with the idea that the election was stolen. In this case Donald Trump would be the Peter/James analogue, and you'll note that he wasn't exactly leading from the front on 1/6...
