With most of the votes counted, the two candidates traded a lead of just a few hundred votes.
Mike Flynn, a hospital unit coordinator from suburban New Albany northeast of Columbus, voted for Balderson as a show of support for Tiberi.
On stage with Trump, Balderson called himself "someone who will fight for President Trump's economic agenda".
In Kansas, Kris Kobach, a conservative leader in the movement to restrict illegal immigration and pass more restrictive voting laws, was running slightly ahead of Governor Jeff Colyer with about 30 percent of the votes counted for the Republican gubernatorial nomination.
Democrats, meanwhile, have been attacking Balderson by casting his support of tax cuts as threats to Social Security and Medicare. Republicans had tried to tie the 31-year-old Franklin County recorder to House Minority Leader Nancy Pelosi, falling back on a tried and true strategy of scaring wayward Republicans and independents about a return of Speaker Pelosi.
Ricciardo to leave Red Bull for Renault
Daniel Ricciardo is to leave Red Bull at the end of the 2018 season for Renault . He finished third in the drivers' standings in 2014 and 2016.
Other key contests included a Democratic battle for governor in MI, where a more mainstream candidate defeated a progressive challenger, and a high-profile conservative challenge to the incumbent Republican governor in Kansas.
"If Democrats are winning any of these long-shots seats on Election Night, the House is probably already a lost cause for Republicans", the report notes. The race could become further disrupted if Kansas City-area businessman Greg Orman makes it onto the November ballot.
Trump endorsed Kobach, Kansas' secretary of state, on Monday.
The pro-Balderson effort has focused largely on motivating Republican voters by casting O'Connor as extreme. Senate Republicans had hoped to make MI, a state which Trump carried, competitive, but it's fallen down the list of top targets for 2018. His campaign spent $2.25 million on advertising compared to Balderson's $507,000, according to campaign tallies of ad spending. Strong on Crime, Border & Military.
"A Republican loss well might tell us more".
A 9-Year-Old Boy's Lemonade Stand Was Robbed at Gunpoint
Deputies are seeking a teenager accused of robbing a 9-year-old's lemonade stand at gunpoint in a North Carolina neighborhood. Neighbour Kelly Smith said the robbery was "heart-wrenching", adding: "That little boy will never be the same".
The five-way Democratic primary featured labour lawyer Brent Welder, who campaigned recently with self-described democratic socialists Vermont Sen. Bernie Sanders and ascending political star, Alexandria Ocasio-Cortez, a NY congressional candidate.
Also in the race: Native American attorney Sharice Davids and former school teacher Tom Niermann.
In Michigan, three mainstream Democrats in suburban Detroit were among those vying for a chance at retiring Republican Rep. Dave Trott's seat in November.
Republicans are scrambling to avoid an embarrassing defeat in a seat that the party has held for decades. He would join Tim Scott of SC as the only black Republican senators if he wins in November.
The night before the rally, Trump took to Twitter to attack LeBron James, calling the National Basketball Association star dumb just days after James, an OH native, poured tens of millions of his own dollars into the opening of an innovative public school in Akron.
Taylor Swift's 7 Stylish Looks to Follow
On the 1989 tour, she was constantly donning the skater skirt and jazzing it up with an assortment of crop tops and sports coats. She attended her first Academy of Country Music Awards just five months before her first album was released, that was in 2006.