Voting in Iowa

I'm looking for articles that confirm it, but I just heard on the morning news that 95% of all Iowa voters are registered, new registrations for Democrats outnumber those of Republicans 9:1 (!), and overall voter registration has increased by 10%. The 95% is the highest in the country and the increase of 10%+ is only shared by South Dakota.

Update: Chet Culver, SoS, was just on and said that there are only 100,000 unregistered voters in the state so I don't know if that matches the 95% or not. WaPo Both Paties Claim Registration Success:

In Iowa, Democrats have registered four voters for every new Republican voter since 2000. Since this year's caucuses, Democrats have outregistered Republicans by 9 to 1, narrowing the GOP lead in registration statewide to about 8,000.

So it's voters registered by Democrats, not Democratic registrations. That makes a little more sense.