(CNN) - As Republican candidates campaign in the final days leading up to the Michigan primary next week, President Barack Obama's re-election campaign released a new ad in the state, blasting his GOP opponents for opposing the auto bailouts.
"Made in America. For generations of Michigan autoworkers it's more than a slogan. It's a way of life," the ad's narrator says. "But when a million jobs were on the line, every Republican candidate turned their back."
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The ad shows an image of Rick Santorum, then switches to Mitt Romney.
"Even said, 'Let Detroit go Bankrupt'," the narrator adds.
The quote was a nod to Romney's 2008 New York Times op-ed, in which he argued against the auto loans and proposed that certain car companies go through bankruptcy.
Turning to footage of Obama, the ad then touts the president's handling of the issue.
"Now, a retooled, restructured industry is back," the narrator says. "Because of the grit and sacrifice of Michigan workers."
The 30-second spot ends with a clip from a 2010 speech in Indiana in which the president said, "Don't bet against the American worker."
This is the second pro-Obama ad hitting Michigan airwaves this week. On Wednesday, a super PAC supporting the president, Priorities USA, went up with a new commercial that also attacked Romney.
Responding to the ad, Romney's team sent out a statement Thursday.
"The last thing President Obama and his team want to do is face Mitt Romney in the general election. Their factually false television ad proves they are more focused on Mitt Romney than they are on getting Michiganders back to work. President Obama is desperate to hold onto power," said Amanda Henneberg, Romney spokesperson.
- CNN's Ashley Killough contributed to this report.