Ronald Reagan was a former California Democrat, NOT a liberal.
In fact, he stated the Democratic Party left HIM during the 60s/70s...
Trump on the other hand had NO problem sticking with the RATs until very recently... Right around the time he decided to run for office conveniently for him...
Reagan said he was a "near hopeless hemophiliac" bleeding-heart liberal.
He was a founding member of the California branch of the very liberal Americans for Democratic Action back in the '40s and was considered for state chairman of the organization.
Certainly, Ronald Reagan's liberal days were far behind him when he ran for president and won, but he really was a liberal in his younger years.