At least $ 1 billion spent in 2012 alone . After winning a bruising Republican primary , Thompson was seen as an early favorite -- partly because Wisconsin has recently leaned much more 'red . ' Poll shows in House , Senate races , those who spent most won . Obama campaign rasied almost twice as much as Romney campaign .
At least $ 1 billion spent in 2012 alone . Poll shows in House , Senate races , those who spent most won . Obama campaign rasied almost twice as much as Romney campaign .