Trump: Clinton 'wasting her time' in Michigan
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Donald TrumpDonald John TrumpPoll: Both parties need to do more on drug prices Senate approves .3 trillion spending bill, sending to Trump White House: Trump will delay steel tariffs for EU, six countries MORE late Saturday panned Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonWhite House would like to see Biden ‘in the boxing ring’ in 2020 House Judiciary chair subpoenas DOJ for FBI documents The suit to make Electoral College more ‘fair’ could make it worse 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 PenceTrump replaces McMaster with Bolton as national security adviser John Oliver says his parody Pence rabbit book has sold out Charlotte Pence responds to John Oliver's rabbit book spoof: ‘I’m all for it’ 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 ClintonKentucky candidate takes heat for tweeting he'd like to use congressman for target practice Will Sessions let other 'McCabes' off the hook or restore faith in justice? Progressive group launches anti-Trump 'We the Constitution' campaign 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.