Trump: Clinton 'wasting her time' in Michigan
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Donald TrumpDonald John TrumpHouse Democrat slams Donald Trump Jr. for ‘serious case of amnesia’ after testimony Skier Lindsey Vonn: I don’t want to represent Trump at Olympics Poll: 4 in 10 Republicans think senior Trump advisers had improper dealings with Russia MORE late Saturday panned Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonGrassley blasts Democrats over unwillingness to probe Clinton GOP lawmakers cite new allegations of political bias in FBI Top intel Dem: Trump Jr. refused to answer questions about Trump Tower discussions with father 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.

"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 PenceMichael (Mike) Richard PencePence allies worried he'll be called to answer questions from Mueller: report Trump thought it was ‘low class’ for Pence to bring pets to VP residence: report Pence told RNC he could replace Trump on ticket after 'Access Hollywood' tape came out: report MORE, campaigned there on Friday.

Clinton's campaign announced Saturday that she would visit the state on Monday, while former President Bill ClintonWilliam (Bill) Jefferson ClintonMueller’s probe doesn't end with a bang, but with a whimper Mark Mellman: History’s judgment Congress should massively ramp up funding for the NIH 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.