Election analyst Henry Olsen said Friday that President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE does not need 50 percent of the national vote to win a second term due to concentrated opposition to him in large Democratic states like California and New York.

"The thing is, the president doesn't need 50 [percent] to win," Olsen, a Washington Post columnist, told Hill.TV's Jamal Simmons on "What America's Thinking."

"Opposition to him is so concentrated large blue states if he's at 47 [percent] on Election Day, he's at over 50 percent in every swing state, including Arizona and Michigan, and he's going to win reelection," he continued.

"If he's at 47 percent in the RealClearPolitics average, he's going to win reelection because he'll be at over 50 in the Electoral College. He might lose the popular vote by a point or two, but he'll win the Electoral College," he said.

Trump won the Electoral College in 2016 by flipping traditionally blue states such as Michigan, Wisconsin, and Pennsylvania.

However, his Democratic opponent, Hillary Clinton Hillary Diane Rodham ClintonJoe Biden looks to expand election battleground into Trump country Biden leads Trump by 12 points among Catholic voters: poll The Hill's Campaign Report: Biden goes on offense MORE, won the popular vote by more than 2 million votes.

A new Hill-HarrisX survey found that 47 percent of registered voters said they approved Trump, which is up from last week's approval rating of 44 percent.

— Julia Manchester