Few Iowa politics watchers doubt that Democrats will gain ground in the state House today–the only question is how much will the Republican majority shrink.

In contrast, the Iowa Senate landscape could shift in either direction. Republicans now hold 29 seats and are unopposed in Senate district 1, where independent Senator David Johnson is retiring. They are also outspending several Democratic incumbents in districts Donald Trump carried in the last presidential election. Democrats currently hold 20 Senate seats, but they could add to their ranks today, despite a difficult map and a couple of bad breaks over the summer.

Here’s how the key races look going into election day, based on voter registration totals, recent voting history, absentee ballot numbers, and where Democratic or Republican leaders have made large expenditures.

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.

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.

As always, a few surprises lurked in the campaign finance reports Iowa statewide and legislative candidates were required to file by July 19.

Some Iowa office-holders who are facing tough campaigns made little apparent effort to raise money, even though fundraising capacity is one of the biggest perks of incumbency in American politics.

Josh Hughes is a Drake University undergraduate and vice president of the I-35 school board. -promoted by desmoinesdem

There’s no question about it– 2018 is shaping up to be one of the most Democratic election years in nearly a decade. Polling and special election results all point to a significant advantage for Democrats in both voter preference and enthusiasm. It’s enough for most experts to consider the U.S. House a “tossup,” which is remarkable considering the gerrymandered playing field Democrats must compete on. Such a national political environment points to only one thing– the Iowa House of Representatives is in play too.

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.