We're not far away from the primary in Michigan, the state where Mitt Romney was born, where his father served as governor in the 1960s — and where Romney won four years ago. But the most recent polls have the latest "not Mitt" candidate — Rick Santorum — ahead.
If Romney failed to win Colorado, Minnesota and Missouri because he didn't spend heavily and go negative, is spending heavily and going negative from here on out the only way for him to win? And if he loses Michigan, then what? Meanwhile, as the Republicans fight, the economy is improving, along with President Obama's polling numbers. NPR's Ken Rudin and Ron Elving have the latest in this week's political roundup.