The thread isn't believable because there was no mention of John Anderson in 1980. The Republican Rep. from Illinois who ran to the Left of Reagan and got 7% of the vote in the General, after switching to an Independent candidate.
I remember Carter backing-out of a 3-way debate, complaining it was unfair to face 'two Republicans'. I watched it, but nothing notable came out of it because all I can remember is Reagan and Anderson talking.
I voted for Anderson, btw. Reagan looked weak after muffing his VP-choice, with Kissinger, Lyn Nofziger, Ed Meese, et al, trying to get Gerry Ford on the ticket as a 'Co-President'. Too bad the internet and 24-hour news weren't around then.