Here's the link to Craig Robinson's story on poll numbers in the state's US Senate race.

As he said on the air with us--pay very close attention to Bruce Braley and Joni Ernst's "unfavorable" numbers, and how they don't auger well for the GOP candidate.  It's one thing for voters to have no opinion of you--it's a whole other thing for them to tell someone they don't like you.  Thing is, Sen. Ernst is running out of time to win the hearts and minds of undecided voters.  

The effect of negative ads is also fascinating.  We can say as much as we want that we hate them, and think less of the politicians who use them, but the facts are clear--they absolutely work. And, they seem to be working more right now for Rep. Braley.