J.D. Vance, the Republican nominee running in a tight Ohio senate race against Rep. Tim Ryan, cast his vote in Cincinnati Tuesday morning.

Vance told ABC News that he has "nothing to say" to his opponent but he hopes Ryan is "doing OK.”

Vance said his message to undecided voters is: are they “happy with the direction of the country and has your life gotten better last couple of years? Because I think if the answer is no, then you should get out there and vote for me. We have an opportunity to push the country in another direction.”

Vance told reporters he thinks Monday night's rally hosted by former President Donald Trump helped his campaign.

“The big thing we hope to get out of it is just to boost turnout. I think we're in a position where we'll win this race so long as people get out there and vote,” Vance said. “People just aren't happy with the direction that Biden administration. They don't want a rubber stamp for Joe Biden and Nancy Pelosi. They want an independent voice for the people of Ohio. And I think that the good thing about last night, or at least one good thing about last night, is that it really reinforced that we could take this country back -- we just have to get people out there to vote.”

-ABC News’ Paulina Tam

Lt. Gov. of Pennsylvania and Democratic Senate candidate, John Fetterman, cast his vote Tuesday morning in his hometown of Braddock, just outside Pittsburgh. Fetterman, who drove himself in his pickup truck, didn’t answer any questions from reporters.

His opponent, Republican Senate candidate Dr. Mehmet Oz, voted Tuesday morning in the upscale Philadelphia suburb he has called home for two years, making brief before being whisked into an SUV.

"Pennsylvania is sending a very clear message to Washington. We want less radicalism and more balance, so I encourage everyone to vote. It's your duty," Oz said.

Oz ignored questions from the large group of reporters, including whether he had a response to the lawsuit brought Monday night by Fetterman’s campaign. The suit seeks to allow undated or wrongly dated mail ballots to be counted.

-ABC News’ Eva Pilgrim and Will McDuffie

With FiveThirtyEight forecasting a slight edge for a GOP takeover in the Senate -- and with momentum solidly behind Republicans -- what would that mean?

In short, big changes and a Biden presidency instantly having to play defense.

Read more here.

-ABC News' Trish Turner

The results of the 2022 midterm elections will almost certainly not be called on election night but in the days and weeks after polls close on Tuesday, according to election experts and officials.

This is normal, they told ABC News, because the results of a number of decidedly tight, consequential federal and statewide races will be counted on each state's separate calendar. Early and mail-in votes and ensuing recounts or challenges to results could further prolong the certification of votes.

“I would highly doubt that we would know who controls both chambers of Congress by the end of Election Day. I think we need to be prepared for an Election Day that will likely stretch over the week,” said Ashley Koning, an assistant research professor and director of the Eagleton Center for Public Interest Polling at Rutgers University.

Read more here.

-ABC News' Isabella Murray