Obama and GOP candidates like Romney and Santorum compete in Rust Belt states like Michigan by promising a return to the heyday of manufacturing. They must instead focus on America's unique receptivity to new ideas for business.
Mitt Romney was in Florida to attend the Daytona 500 on Sunday, when there was a make-or-break primary in two days in Michigan. The appearance could be indicative of Romney camp confidence.
Mitt Romney wanted the focus to be on his plan for the economy, but mention of his wife's two Cadillacs at the speech in Detroit renewed concerns that his wealth could be a liability.
Some conservative pundits worry that Rick Santorum has not yet shown the ability to be the sort of optimistic unifier – à la Ronald Reagan – that general-election voters tend to prefer.