MGM chairman and CEO Jim Murren is crossing the aisle for his country.

A lifelong registered Republican, Murren is known for not making public endorsements in the past elections, especially at the presidential level. But the Vegas executive is putting his party aside—for now—and announces he’s making his first ever public endorsement of a presidential nominee, and that’s Hillary Clinton.

In an op-ed piece in USA Today, Murren listed the reasons why it was an easy decision for him to back the Democrats’ nominee over his own party’s Donald Trump.

“I believe that few presidential candidates are as prepared for the job as Clinton,” Murren wrote. “I speak from the personal experience of being with her in a room, working on issues in real time. Each time I have met with her to discuss complicated matters such as trade and energy policy, I have been incredibly impressed by her knowledge, command of the facts and solution-oriented approach.”