You should add that Trump was a Democrat prior to 1987.
Ronald Reagan was a 2-term Republican governor (’67-’75) of CA - became a Republican in 1962, he was divorced by his first wife because of his conservative activism, and he remained a Republican (for 42 years) until the day he died (2004).
And Ronald Reagan was a Republican activist for 20 years before being elected to his 1st presidential term.
I can see The Donald with the hectic pace of the business world. He has not had much time to focus on political ideology. Yet even though it is a slow political transformation, that has not been a straight path, his pragmatic mind has achieved conservative values and we are fortunate that he will fight for these values.