Key individuals and Democratic-aligned organizations moved quickly this week to boost Theresa Greenfield, the third candidate to announce a challenge to U.S. Senator Joni Ernst. Both the Democratic Senatorial Campaign Committee and EMILY’s List, a major source of support for pro-choice Democratic women candidates, announced their support on June 6.

Greenfield’s campaign released its first list of prominent supporters on June 5, including former Lieutenant Governor Sally Pederson, five current and two former state legislators, two former leaders of the Iowa Democratic Party, three local elected officials, and several longtime Democratic campaign hands.

Some candidates space out high-profile endorsements over a long period in order to general media coverage. An early show of organizational strength like this is typically aimed at discouraging other candidates from joining the field. Linn County Supervisor Stacey Walker and former Congressional candidate J.D. Scholten have both said they may run for Senate.

Greenfield’s current competitors for the Democratic nomination are Kimberly Graham and Eddie Mauro. In a written statement following Greenfield’s June 3 launch, Mauro commented, “Iowans want a spirited primary not influenced by Washington insiders or the establishment, and deserve new progressive leadership in the United States Senate with a record of taking action and leading on progressive issues.” That statement and this week’s other relevant news releases are enclosed below.

UPDATE: U.S. Senator and presidential candidate Kirsten Gillibrand endorsed Greenfield on June 6 as well.

Seven candidates are seeking the Democratic nomination in Iowa’s third Congressional district, where two-term Representative David Young will be a top target for national Democrats and outside groups. Young’s approval rating was below 40 percent in an October survey by Public Policy Polling for Patriot Majority USA. The latest Iowa poll by Selzer & Co for the Des Moines Register found that 36 percent of respondents in IA-03 would support an unnamed Republican running for Congress, while 35 percent would vote for a Democrat.

This race is wide open, and the nominee may be chosen at a district convention, if no contender receives at least 35 percent of the vote in the June 5 primary. To that end, several candidates are recruiting supporters to attend Iowa Democratic precinct caucuses on February 5. Those caucus-goers will select county convention delegates, and county conventions will select district convention delegates on March 24.

About two-thirds of the Democrats and more than half of all registered voters in IA-03 live in Polk County, containing Des Moines and most of its suburbs. The district’s sixteen counties contain 161,724 active registered Democrats, 173,947 Republicans, and 171,061 no-party voters, according to the latest figures from the Iowa Secretary of State’s office.

While many Democratic activists, including myself, haven’t chosen a favorite in this strong field, others have been coming off the fence. Some labor unions or other progressive organizations have started to weigh in too. Last week I asked all seven candidates–Cindy Axne, Pete D’Alessandro, Austin Frerick, Theresa Greenfield, Paul Knupp, Eddie Mauro, and Heather Ryan–for a list of endorsements or prominent supporters.

Candidates backed by Iowa’s largest teachers union did well in the first school board elections since Republican lawmakers and the Branstad/Reynolds administration scrapped meaningful collective bargaining rights for public workers.

State Senator Nate Boulton and Fred Hubbell have locked up more support among state lawmakers than the five other Democrats running for governor combined.

Whether legislative endorsements will matter in the 2018 gubernatorial race is an open question. The overwhelming majority of state lawmakers backed Mike Blouin before the 2006 gubernatorial primary, which Chet Culver won. Last year, former Lieutenant Governor Patty Judge won the nomination for U.S. Senate, even though about 60 current and 30 former Democratic lawmakers had endorsed State Senator Rob Hogg.

Nevertheless, prominent supporters can provide a clue to activists or journalists about which primary contenders are well-positioned. Where things stand:

“Our state has been hijacked by a group of people who have absolutely no interest in making the state better. If you’re not like them, they don’t care about you.” With those words, Dan Nieland officially launched his Democratic campaign for Iowa House district 30 this week.

Although rising Republican star Zach Nunn won re-election here comfortably last year, this seat encompassing much of eastern Polk County could become a competitive race in 2018.

Since the latest deadline for state legislative candidates to report to the Iowa Ethics and Campaign Disclosure Board passed on May 19, I’ve been going through the forms filed by incumbents or challengers in potentially competitive races.

Some of the contribution totals were much lower than I expected to see.

Follow me after the jump for ten Iowa House or Senate incumbents who haven’t been focused on fundraising, even though they could face tough re-election campaigns.