Race for Harkin's seat could be '$20 million race'

Now, as Democratic U.S. Sen. Tom Harkin prepares to step down in 2014, KWWL political analyst Chris Larimer said the race for Harkin's seat is shaping up to be one of unprecedented campaign spending in Iowa.

http://www.kwwl.com/story/22870602/2013/07/17/race-for-harkins-seat-could-be-20-million-race