Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE late Saturday panned Democratic presidential nominee Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE's added stops in Michigan in the final days of the election campaign, arguing she is "wasting her time."

"Michigan was never really in play for a Republican. But you know what? It's in play for us. Because all of their cars are being made now in Mexico," Trump told an audience in Denver.

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"It's in play now," Trump continued, going after Clinton during a critique of policies he argued hurt U.S. workers.

"I think she's wasting her time," Trump, the Republican presidential nominee, said.

"I think, rather than going to Michigan, she ought to go home and relax," he said.

Trump has made a recent push for support in the Midwest state, holding a pair of rallies there last Monday while his running mate, Indiana Gov. Mike Pence Michael (Mike) Richard PenceButtigieg stands in as Pence for Harris's debate practice Trump argues full Supreme Court needed to settle potential election disputes Pence adviser knocks ex-staffer who criticized Trump on COVID-19 MORE, campaigned there on Friday.

Clinton's campaign announced Saturday that she would visit the state on Monday, while former President Bill Clinton William (Bill) Jefferson ClintonChelsea Clinton: Trump isn't building public confidence in a vaccine Hillary Clinton launching podcast this month GOP brushes back charges of hypocrisy in Supreme Court fight MORE would visit Sunday and President Obama on Monday.

A Republican presidential candidate has not won Michigan since 1988, and polls have shown Hillary Clinton with a consistent lead there, though some recent polling has indicated a tightened race.

Clinton has sought to shore up support among black voters in several battleground states amid a tightening in polls. Still, reports have indicated a rise in early voting among Hispanics, a potential bright spot for Democrats.

"We are doing very well with the African-American community, and we are doing very well with the Hispanic community," Trump claimed Saturday night in Colorado, a state with a significant Hispanic population.