[x]

Romney actually left the republican party during the 1980 campaign.

If you had any evidence of that you would have produced it by now.

And yet you go on repeating it with no evidence at all.

[Lancey Howard]

Romney: "Look, I was an independent during the time of Reagan-Bush. I’m not trying to take us back to Reagan-Bush."

[ansel12]

If you had any evidence of that you would have produced it by now. And yet you go on repeating it with no evidence at all.

That is a form of lying to these people.

Pretending that I have been asked to produce evidence for the claim and have never done so.