Both Democratic incumbent Jeff Danielson and Republican challenger Matt Reisetter have started advertising on television in what is expected to be one of Iowa’s most competitive legislative races: Iowa Senate district 30. Both videos and transcripts are after the jump, along with a district map and background on both candidates.  

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.

The nice thing about a large majority, like the 60 to 40 Republican advantage in the Iowa House, is not needing every vote in your caucus for every bill. Members can oppose the party line when local interests are threatened without derailing the legislative process. Retiring State Representative Steve Lukan showed how it’s done when he voted against the Rebuild Iowa Infrastructure Fund budget in the House Appropriations Committee last week, because that bill left out $5 million in funding for a major project in Lukan’s district.

This basic concept of representing your constituents is apparently lost on Walt Rogers. The first-term Republican from a district covering parts of Cedar Falls and Waterloo just voted for an education budget that slashes funding for the University of Northern Iowa.

UPDATE: Scroll down for Rogers’ weekly newsletter, which discusses his vote on the education budget.

The redistricting process and several Republican retirements have created many pickup opportunities for Iowa House Democrats. The devastating 2010 election left them nowhere to go but up in the lower chamber, where Republicans currently enjoy a 60 to 40 majority. Relatively few sitting House Democrats represent vulnerable districts.

Speaking to activists at the Polk County Democratic convention on March 10, I heard lots of optimism about the House races. After the jump I’ve posted some early thoughts on the seats up for grabs.