Fossilized Democrat Tom Harkin patronizes Joni Ernst

The latest polls have Republican Joni Ernst opening a commanding lead over Democrat Bruce Braley in the Iowa Senate contest. Braley is a clumsy gaffe-machine candidate who shouldn't be within 10 points of her. (Considering how many objectively awful candidates Democrats have run in this election cycle, I feel a bit cynical that some of these contests are "races" at all. How can someone like Bruce Braley, or Mary Landrieu in Louisiana, still be in the running after actively insulting the voters? Is this some combination of low expectations and...