Megyn Kelly asked Donald Trump about some of his views being out of step with Republicans over the years. 

She said in 1999, Trump said he was "very pro-choice" and supported partial-birth abortions, along with supporting an assault weapons ban. 

Kelly said that in 2004, Trump stated that he identified as a Democrat "in most cases."

"Even in this campaign, your critics say you often sound more like a Democrat than a Republican, calling several of your opponents on this stage things like clowns and puppets. When did you actually become a Republican?" she asked. 

Trump said that he's "evolved" on many issues, just like Ronald Reagan did, and that he's "pro-life."

Watch the exchange below.