Don't laugh, Romney did drop his Republican registration because of president Reagan in the mid 1980s, in 1992 all of his donations went to Democrats in several states, and he even did fund raising for a Democrat candidate, Romney only dropped his I registration, and went back to R, in 1993 to run for office.
Whew! That sounds a bit on the unstable side if true. Oh, and that’s another thing that will jump up and bite him on the rump if he runs; along with other things.