Iowa primary results: Trump-backed Feenstra concedes to Lahn in governor primary; Hinson and Turek will compete for open Senate seat

Iowa Democratic state Rep. Josh Turek will face Republican state Rep. Ashley Hinson, who was endorsed by President Donald Trump, in November for the U.S. Senate seat being vacated by retiring Republican Sen. Joni Ernst, ABC News projects.

Meanwhile, in the closely watched Republican primary for governor, ABC News projects Zahn Lahn, a farmer and businessman, will defeat Trump-backed Rep. Randy Feenstra.

Feenstra, a three-term congressman who won a last-minute endorsement from Trump last week, entered the race widely considered the frontrunner.

Feenstra conceded to Lahn, both campaigns confirmed to ABC News.

Iowans also voted in primaries several competitive House races.

See live election results below: