The AP reports Mitt Romney will start airing ads over the weekend in Minnesota, a state that last went Republican in 1972. 

Romney's campaign says they have about $169 million in cash on hand, a huge amount of money with the election only two weeks away and most swing state airwaves already saturated

While one Rasmussen poll finds Romney only 5 percentage points down in Minnesota, other public polls do not suggest that the race in Minnesota has tightened. The small buy (update: it appears to be only $30,000), like Romney's announcement that he was moving a staffer out of North Carolina, is likely bullishness intended to scare Democrats and possibly force them to spend some money in the state.