Fifth in a series interpreting the results of Iowa’s 2018 state and federal elections.

Republicans ended straight-ticket voting in Iowa last year as part of a law imposing several new barriers for voters. For months, I’ve been trying to work out how eliminating that option would affect this year’s outcome.

More than 400,000 Iowans filled in the Democratic or Republican oval on their 2014 general election ballot, which worked out to roughly 37 percent of those who participated. I expected a much larger “undervote” for lower-profile statewide offices or legislative races this year, as many who would have voted straight ticket marked their ballots for governor and Congress alone.

That didn’t happen.

Third in a series interpreting the results of Iowa’s 2018 state and federal elections.

At least three and possibly four newly-elected members of the Iowa House had campaigned unsuccessfully for the same seats in past election cycles. Three newly-elected members of the Iowa Senate lost elections for other offices in recent years.

They join a long list of Iowa politicians–including Tom Harkin and Kim Reynolds–who did not win the first time they sought a legislative office.

As was the case two years ago, Democratic candidates are at a financial disadvantage in almost all of the Iowa Senate districts both parties are targeting.

The disparity adds another challenge to a party already facing a difficult path to gaining ground in the upper chamber. Republicans currently hold 29 of the 50 Senate seats and are guaranteed to pick up the district independent Senator David Johnson is vacating.

Five weeks before the general election, the Republican Party of Iowa has begun airing television commercials to promote Senate Majority Leader Jack Whitver and State Senator Julian Garrett.

The advertising suggests that Republican internal polling shows Democrats Amber Gustafson and Vicky Brenner within striking distance in Senate districts 19 and 13, respectively. Democratic internal polling presumably shows competitive races too, since former President Barack Obama included Gustafson and Brenner on his list of Iowa endorsements this week. Only five state legislative candidates made the cut.

Republicans are all but guaranteed to maintain control of the Iowa Senate after November and could expand their majority, now at 29 out of 50 seats. However, Democrats have a chance to pick up a few districts as they work toward winning back the chamber in 2020.

More Iowa women are running for office in 2018 than ever before, which could lead to record numbers of female state representatives and senators next year.

However, in other meaningful ways, Iowa’s legislature could become less diverse after the November election.