O'Connor, 34, however, onstage at his campaign headquarters in the central OH district, said the race was a "tied ballgame", with a rematch due in November's regular congressional election for the seat, which opened up when GOP Rep.
A Republican clung to a narrow lead in a hotly contested U.S. House of Representatives race in OH late on Tuesday, holding off a strong challenge in the reliably Republican district after a late show of support from President Donald Trump.
According to data obtained by TIME, Balderson had only spent $507,206 on television ads as of August 3, while O'Connor had spent over $2 million. Bernie Sanders (I-Vt.) who narrowly lost the 2017 special election in a sign of some Republican trouble to come. All 435 House seats, 35 of 100 Senate seats and 36 of 50 governors' offices are up for grabs in November.
But there was little evidence of enthusiasm on the eve of the election as Balderson tried to connect with voters over the phone during a brief stop at a campaign phone bank.
"It's closer than originally thought, but it's a challenging midterm environment", said one national Republican strategist involved in the race.
It's unclear whether Trump's support helps or hurts his preferred candidate of Balderson.
The primary also is when the next congressman or congresswoman will effectively be chosen in two solidly Democratic U.S. House seats opening due to retirements, and when nominees will be selected for an open battleground district in suburban Detroit. In November, Republicans will be defending over 70 seats that are considered more favorable for Democrats and will not have those advantages.
In Kansas, sitting Governor Jeff Colyer was locked in a close battle for the Republican gubernatorial nomination against immigration hardliner Kris Kobach, who received Trump's endorsement on Monday. The race could become further disrupted if Kansas City-area businessman Greg Orman makes it onto the November ballot.
Mighty Ducks star Sean Weiss horror mug shot following arrest
He spent a few hours in a local jail cell until he sobered up, but was not formally charged. After pleading no contest, he was sentenced to 150 days in the Los Angeles County Jail.
"He is a fantastic guy who loves his State and our Country - he will be a GREAT Governor and has my full & total Endorsement!" Debbie Stabenow, who ran unopposed in the Democratic primary. In doing so, he ignored the pleas of the Republican Governors Association to stay out of the race.
After Alexandria Ocasio-Cortez's stunning victory in NY against Rep. Joe Crowley, progressives hope to demonstrate that their policies can win over voters in the middle of the country.
And in suburban Seattle, three Democrats vied in a jungle primary for the seat held by another retiring Republican, Rep. Dave Reichert.
The field was set in two Senate contests as well.
Cory Bliss, executive director of the Congressional Leadership Fund, a Republican-aligned SuperPAC, said: "While we won tonight, this remains a very tough political environment and moving forward, we can not expect to win tough races when our candidate is being outraised".
Mr. Hawley, the Missouri attorney general, advances to face Democratic Sen. He would join Tim Scott of SC as the only black Republican senators if he wins in November.
Iraq War veteran John James also won the Michigan GOP Senate primary to take on Democratic Sen.