During a radio interview with John Catsimatidis, Reid detailed the Democratic efforts against several vulnerable GOP senators up for reelection this year.

“We only need four (seats) to take the majority,” he said. “With the numbers I’ve given you, it’s going to be a fairly certain thing that we can do that.”

Reid predicted earlier in the interview that the Democrats would win, or at least compete for, Senate seats in Wisconsin, Illinois, Ohio, Pennsylvania, Missouri, Florida, New Hampshire, Iowa and Arizona.

Reid also made some predictions about the presidential races, blasting Republican front-runner Donald Trump for his harsh rhetoric toward women, immigrants and disabled people.