President Trump speaks at Ohio Republican state dinner

COLUMBUS, Ohio -- President Donald Trump is branding Democrats as "left-wing haters and radicals" who are trying to "tear down our institutions."

He also says they're "nasty."

Trump unleashed the string of insults in a speech Friday at the Ohio Republican Party fundraising dinner in Columbus. The speech was meant to help unite fractious state Republicans heading into the November midterm elections.

Trump says that with Democrats, "it's always negative, nasty, the way they come after me."

Polls show that large majorities of Democrats disapprove of Trump's performance in office, but he says they need to get over it and accept that he's president.

Adds Trump: "We won the election. We're going to win again in 2020. ... These are nasty people.

The state dinner, which is an annual event, is being skipped by Ohio's Republican governor, John Kasich. Kasich challenged Trump for the GOP presidential nomination in 2016 and remains one of Trump's sharpest critics.

Trump says: "This November, we're going to win really big. It's going to be one big Ohio family."

He is stressing the importance of electing more Ohio Republicans in November to help the party keep its hold on both houses of Congress.

Here is the Ohio Democratic Party response:

“Tonight at the Ohio GOP dinner, Trump said that Rich Cordray destroyed people's lives -- but it was actually millions of Americans who had their lives destroyed by Wall Street's greed and cronyism, and Rich took on the fight. Let's be clear: by attending tonight's dinner and campaigning with Donald Trump, DeWine and Ohio Republicans are publicly aligning themselves with Trump and his agenda to look out for the wealthy and special interests. Their presence at tonight’s dinner is simply a slap in the face of working Ohio families.”