President Trump defended the electoral college on Tuesday following calls by presidential hopefuls Elizabeth Warren and Beto O’Rourke to abolish the system.

“The brilliance of the Electoral College is that you must go to many States to win,” Trump tweeted on Tuesday night. “With the Popular Vote, you go to… just the large States – the Cities would end up running the Country.”

The statement came one day after Warren, a Massachusetts Democrat, said during a CNN town hall event that she would back a plan to scrap the process and move to a national popular vote.

“My view is that every vote matters,” Warren said on Monday night. “And the way we can make that happen is that we can have national voting and that means get rid of the Electoral College — and every vote counts.”

A second Democratic presidential contender, former Texas Rep. Beto O’Rourke, addressed the issue while speaking to students at Penn State University on Tuesday.

While mourning the Hillary Clinton’s loss in the 2016 election, O’Rourke said there is “a lot of wisdom” in calls to change the system.

“I think there’s a lot to that. Because you had an election in 2016 where the loser got 3 million more votes than the victor,” O’Rourke said, according to Fox News.

“It puts some states out of play altogether, they don’t feel like their votes really count.”

Trump, who tweeted in 2012 that “The electoral college is a disaster for a democracy,” admitted that his view have evolved on the subject.

“I used to like the idea of the Popular Vote, but now realize the Electoral College is far better for the U.S.A.” he wrote on Tuesday night.