There are a host of primaries on Tuesday in states across the country, but for one that shows just how effective money can be in politics, look no further than Pennsylvania.
Four Democrats are competing to run against Republican Gov.
Tom Corbett, widely thought to be one of the most vulnerable incumbents in the country this election year. Voters are unhappy with Corbett because of cuts to education funding, and because of the state’s moribund economy.
If voters don't like how Corbett has handled the state, Democrats have an answer for how they would change things. Trouble is, most of the positions of the four Democratic candidates on...