At this time four years ago, Barack Obama’s campaign had about 30 field offices up and running in Iowa, compared to six offices for Republican presidential candidate John McCain.

Obama’s campaign has had eight Iowa field offices open this summer and is rolling out another 26 offices around Iowa this weekend. So far, Mitt Romney’s campaign has ten Iowa field offices, in addition to the unified Republican headquarters in Urbandale.

After the jump, I compare the field office locations for each presidential campaign, grouped by Iowa Congressional district. Where relevant, I’ve also noted competitive Iowa House and Senate districts near the Obama and Romney field offices, although I doubt either presidential campaign will do much for down-ticket Democratic or Republican candidates.

Polls closed across Iowa at 9 pm, and I will update this post periodically as results come in from around the states. Any comments related to today’s elections are welcome in this thread.

P.S.- As expected, Wisconsin Democrats fell short in their effort to recall Republican Governor Scott Walker.

UPDATE: Results are after the jump.  

I’m posting the weekend thread early, because the filing period for primary election candidates in Iowa closed this afternoon. The Secretary of State’s Office posted the full list of candidates here (pdf). John Deeth has been covering the filing on a daily basis all month at his blog. Some highlights from races I’m watching are after the jump.

This is an open thread; all topics welcome.

UPDATE: Gotta agree with Senator Chuck Grassley: the History Channel is useless.

A third Democratic candidate has filed nominating papers in the new Iowa Senate district 38. Nick Volk, a bank vice president from Walford (Benton County), will face LaForest Sherman and Shelley Parbs in the June primary. The winner will take on first-term Republican State Senator Tim Kapucian in a swing district. A map is after the jump, along with more background on Volk.

NOTE: A third Democrat, Nick Volk, filed nominating papers in this district on March 15.

Shelley Parbs announced today that she will run for Iowa Senate district 38. She is the second declared Democratic candidate in this district; the winner of the June primary will face first-term Republican Tim Kapucian, a Senate minority leader and ranking member of the Transportation Committee. Background on Parbs is after the jump, along with election-related developments in the two Iowa House seats that make up Senate district 38.