Ohio Gov. John Kasich (R) said Sunday that he thinks Democrats will have a "good year" in the November midterms.

"How good? I'm not so sure, because if their message is abolish [Immigration and Customs Enforcement] and things like that, if — they're not going to have a big wave," Kasich said on CNN's "State of the Union."

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"The natural progression of things is, when the president's in two years out, the other party does well," he said.

"I don't know how big the wave is going to be," the governor said. "So we got to see what happens in November, but then we have to move beyond that election and try to get this country unified."

Kasich has been critical of the Republican Party, saying in April that it "left me." The possible 2020 White House contender lost a 2016 bid to President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE, whom he has chastised.

Analysts have said that Democrats are going into the midterms in a strong position to gain a majority in the House, although their chances of retaking the Senate are eroding.

However, some have begun to predict that the recent confirmation fight over Justice Brett Kavanaugh may galvanize the Republican base to counteract the sluggishness that usually affects the winning party two years after a presidential election.

Democrats currently hold a 6.6 percentage point lead over Republicans in a RealClearPolitics average of generic congressional ballot surveys.

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Kasich describes Kavanaugh confirmation as 'short-term win'