Is Harkin Vulnerable in 2008?

Chuck Todd put out a list of the Top 10 Most Vulnerable Senate Seats in 2008. Iowa's Tom Harkin comes in at #8. Here is what Todd had to say about Harkin...

Iowa (Democrat Tom Harkin): GOP Rep. Steve King sounds like he wants to run, but the ghosts of former Reps. Greg Ganske, Jim Ross Lightfoot, and Tom Tauke are surely giving him pause. Still, some serious Iowa Republican will see all the national press and feel the need to fill the vacuum and take advantage of the potential fundraising boon a presidential contest can provide. The ideal move for incoming NRSC Chair John Ensign (Nev.) would be to buck the trend of recruiting sitting/former House members and convince former GOP Gov. Terry Branstad to come out of retirement.

I really do hope that King runs. That would be an exciting campaign and a sure victory for Harkin. I think it would be a major get if Branstad would run and I think a Harkin/Branstad race would be closer than a Harkin/King race. However, after the populist undertones of the 2006 elections, I think Harkin will be hard to beat with his populist message.