MYTH: Trump's not really a Republican because he donated to Democrats.

In 2008, Trump publicly endorsed John McCain and Sarah Palin, the Republican nominees for president and vice-president respectively on CNN's Wolf Blitzer. He supported Mitt Romney in 2012. Data from the Federal Election Commission and NY State elections show that Trump has given $584,850 to Democrats and $961,140 to the GOP over the last 26 years.

Trump's voting record since 1987 from the Board of elections in NYC is here. http://www.scribd.com/doc/296199659/Donald-Trump-New-York-Voting-Record

FactCheckers say he's a Republican.
http://www.politicususa.com/2015/07/16/politifact-donald-trump-donated-lot-republicans-democrats.html
 
In 1988, Trump said he was a Republican to Larry King at the Republican National Convention
https://www.youtube.com/watch?v=Usb0iE5WiZI