A lot of those voters are older folks, too...those who are less likely to be online, and therefore informed about McCain’s perfidy over the last decade.
That’s part of it, and in addition, McCain reminds them of themselves — old, frail, and liberal-leaning.
It must be the heat or something, but as you get older down here your brain cells start dying and you start pulling to the left. Remember some of the oddball liberal things Barry Goldwater got into in his final years.
the debates both clearly went to JD, McCain was nasty and petulant too bad more didn’t watch.