I don’t believe Reagan changed parties as much as Trump:
Trump’s party affiliation has changed over the years. Until 1987, he was a Democrat.[4] Then he was a Republican from 1987–99.[3] He then switched to the Reform Party from 1999–2001.[3] From 2001–09 he was a Democrat again,[3] and switched to the Republican Party again from 2009–11.[3] An independent from 2011–12, he returned to the Republican Party where he has remained from 2012–present.[
You didn’t post a link, navet.
http://www.freerepublic.com/focus/news/3387449/posts
Trump has voted straight Republican since 1987.