Meghan McCain recently threatened Democrats by saying she might release what her father, John McCain, really thought about Vice President Kamala Harris. But that threat backfired on Sunday. Meghan McCain earlier this week said she that wants Democratic candidates to stop invoking her late father’s memory on the campaign trail — and fired warning shots on social media that there could be more to come. “Now, I know democrats want to reinvent history and turn my Dad into any illusion you guys need him to be depending on the political moment you need to bastardize his memory for…But please don’t m…