Midterm campaign updates: GOP's Cheney endorses Ohio Democrat Tim Ryan for Senate

At a rally in Youngstown, Ohio, on Saturday night on behalf of GOP Senate nominee J.D. Vance ahead of the midterms, former President Donald Trump came out defiant against the numerous investigations into him while continuing to rally his base against his political enemies.

And though Trump was in Ohio to rally support for Vance ahead of “the most important midterm election in U.S. history,” he also took a swipe at his candidate while trying to tout the power of his own endorsement.

“J.D. is kissing my a--, he wants my support so bad!” Trump said to laughter from the crowd.

Trump addressed Vance's previous criticism of him, saying that was “before he knew me and then he fell in love”-- which Trump likened to his relationship with North Korean dictator Kim Jong Un.

The former president -- who has been teasing an expected 2024 presidential bid -- made a number of influential endorsements in GOP primaries this year, even as some in his party, like Maryland Gov. Larry Hogan, said Trump's candidates would be weaker in the general election.

Trump has used his popularity with primary voters to target some of his Republican critics, including House members who voted for his impeachment or local lawmakers who didn't back his false 2020 election claims.

Labeling opponents, including those investigating him, as “thugs and tyrants,” Trump said at Saturday’s rally that they “have no idea of the sleeping giant that they have awoken” -- just days after he warned there would be “big problems” if he were to be indicted.

Among the notable probes against him is a federal case over his handling of what the government says was highly classified and sensitive material that Trump took with him after leaving office. He denies wrongdoing.

And just days after Sen. Lindsey Graham introduced a bill for a federal 15-week abortion ban, Trump reiterated his support for leaving it up to the states -- and warned that Republicans should “get smart” on the issue.

-- ABC News' Olivia Rubin

Dr. Mehmet Oz, the GOP Senate candidate in Pennsylvania, ended a three-stop campaign swing on Monday by driving off with several Philadelphia residents who told him they were dealing with drug addictions -- with Oz then heading to reserve spots at a detox center.

The trip was unplanned, Oz told ABC News.

"The solution is this: Getting people to detox. It's going to fail a lot of times, but it's going to succeed a lot as well," Oz told reporters ahead of their departure for the centers, with the residents in a white pickup truck.

After scheduled events in Germantown, Kensington and McPherson Park, the former surgeon and talk show host spent roughly 20 minutes at a park in Kensington, dubbed the "BadLandz" by residents due to its high crime rate, speaking with community members, some of whom were bystanders who approached Oz and told them they used drugs.

"Do you want help?" Oz asked one man, who identified himself to ABC News as Robert Alvord.

"I need help," responded Alvord, who said he'd lost family members to overdoses.

Oz gave him a drug overdose treatment to have on hand and pointed to community leaders he'd assembled as resources.

"Detox saves lives, but the first step is often the most difficult," Oz tweeted after the interaction, along with an ABC News clip of him driving off with the residents.

--ABC News' Will McDuffie

Virginia Republican Gov. Glenn Youngkin will venture to Arizona next month for another midterm campaign stop -- he’ll stump for Kari Lake, the most MAGA-aligned GOP candidate he’s been a surrogate for thus far.

Youngkin -- whose state does not allow consecutive gubernatorial terms -- has been building a national profile through midterm campaign appearances -- sparking talk of a potential 2024 presidential bid even before his halfway point in office.

A date for Youngkin's visit in Arizona is not yet set, but expected the week of Oct. 17, Lake’s spokesperson confirmed to ABC News following reports from Politico. Over the past few weeks, Youngkin has traveled to Michigan for the state's GOP nominating convention, Nevada -- an early state on the 2024 GOP nominating calendar -- and Maine -- to attend a fundraising event for gubernatorial candidate Paul LePage. He’s also headed to Kansas later this week.

Additional states Youngkin is slated to travel to ahead of this year's elections include Georgia, New Mexico and Oregon, all of which have competitive governor races this year.

Youngkin’s upcoming political and fundraising events for Lake will likely focus on education policy, an issue that propelled him into office last year and remains one of Lake’s campaign centerpieces.

–ABC News’ Libby Cathey and Hannah Demissie

As the Detroit Auto Show in Michigan makes a comeback after a three-year hiatus, ABC News hit the ground in the state as well as the University of Michigan campus to speak to voters on the most important issues that are on their minds.

The state is gearing up to be ground zero of a battle over abortion rights after the state Supreme Court ordered the inclusion of a ballot initiative that seeks to enshrine abortion rights in the state and will be voted on in November. The initiative was originally deadlocked by the board of canvassers in August.

Sam Dubose and Stephen Oduro, seniors at the University of Michigan, identify as pro-abortion rights and they believe the topic of abortion will influence many people to head to the polls on Election Day.

"I'm going to vote my conscience," Dubose told ABC News. "I know what I'm going to do."

Click here to read more views from Michigan voters -- on abortion and more.

-- ABC News' Paulina Tam and Elizabeth Thomas