Republican presidential nominee Donald Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE is speaking at Sen. Joni Ernst's (R-Iowa) annual "Roast and Ride" event at the Iowa State Fairgrounds.

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Ernst's event in the key battleground state begins with a motorcycle ride that starts at the Big Barn Harley-Davidson store and ends at the Iowa State Grounds.

Ernst on Friday criticized Trump for wasting time calling Democratic rival Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE names instead of sticking to policies and issues.

Last year, seven GOP presidential candidates attended the Iowa senator's inaugural "Roast and Ride" event, including Wisconsin Gov. Scott Walker, who rode a motorcycle alongside Ernst. Trump did not attend the 2015 event.

Watch the live event above.