I didn’t know that Mitt started as a Democrat. Thought he was formerly an “Independent”. George and Lenore were liberal Republicans from the start, as I recall reading.
“ He decided to challenge incumbent Democratic U.S. Senator Ted Kennedy, who was seeking reelection to a sixth term. Political pundits viewed Kennedy as vulnerable that year, in part because of the unpopularity of the Democratic Congress as a whole, and in part because this was Kennedy’s first election since the William Kennedy Smith trial in Florida, in which Kennedy’s reputation had suffered.[118][119][120] Romney changed his affiliation to Republican in October 1993”
Regards..