NEW YORK (NewsNation) — Former Vice President Mike Pence is becoming increasingly forward in his willingness to counter former President Donald Trump.

The two held dueling events in Arizona on Friday as rival candidates who offer dramatically different visions of the Republican Party in a critical battleground state. Days later, they will once again cross paths as they deliver major speeches on the same day in Washington, D.C.

The encounters mark a more confrontational phase in the fraught relationship between the former running mates. Once close confidantes, Trump and Pence could soon find themselves competing against one another in the 2024 GOP presidential primary if they both ultimately choose to run.

“I think this is a continuation of the larger message that Pence is trying to embody here, which is the Republican Party should look to the future,” said Scott Jennings, a longtime party strategist. “This is going to be the existential question for the Republican Party: Are we going to listen to a slightly different view than Donald Trump’s? Right now, the standard-bearer for this is Mike Pence.”

That description marks a striking turnaround for Pence, who spent his four years in the White House as Trump’s most loyal defender. Trump turned on his vice president when Pence refused to go along with his efforts to overturn the results of the 2020 election, putting Pence in the crosshairs of a violent riot on Jan. 6.

Pence, who has repeatedly defended his actions on that day, is taking a more active effort to shape the future of the GOP. This week, Pence endorsed Karrin Taylor Robson in Arizona’s Republican gubernatorial primary, pitting himself against Trump, who has endorsed Kari Lake, a former newscaster who has embraced Trump’s claims about a fraudulent election.

“As Arizona Democrats pursue the reckless Biden-Harris agenda, Karrin Taylor Robson is the only candidate for Governor that will keep Arizona’s border secure and streets safe, empower parents and create great schools, and promote conservative values,” Pence said in a statement announcing his decision.

Pence backed Georgia Gov. Brian Kemp, a top Trump target who easily defeated the former president’s hand-picked challenger this spring. But Pence’s Arizona move showed a willingness to weigh in on a closer and open race in alliance with the state’s outgoing GOP governor, Doug Ducey, who also rebuffed Trump’s efforts to overturn the election.

Pence is planning to campaign with Robson in Phoenix and southern Arizona Friday — the same day Trump is set to headline a rally for Lake in Prescott Valley that was rescheduled after the death of his first wife, Ivana Trump. Matt Benson, a Robson campaign spokesman, said Pence would be attending an event at a local employer as well as a briefing on border security while in the state.

A Trump spokesperson did not respond to requests for comment on the events.

Trump and Pence will again cross paths next week as the former president returns to the nation’s capital for the first time since leaving the White House. Pence will address the conservative Heritage Foundation on Monday evening and will speak at the Young America’s Foundation’s annual National Conservative Student Conference on Tuesday morning. That afternoon, Trump will headline a two-day summit organized by the America First Policy Institute and deliver what organizers said would be a policy-focused speech.

Pence, too, will use his speech before the Heritage Foundation to highlight the policy agenda he released earlier this year and to talk about the future of the party, according to aides. The remarks are expected to offer an implicit contrast with Trump, who has spent much of his energy since leaving office on relitigating the 2020 election.

Pence has urged Republicans to move on, even as he continues to tout the accomplishments of what he often describes as the Trump-Pence administration during his frequent appearances.

Pence also huddled privately Wednesday with the House’s Republican Study Committee, the traditionally conservative caucus he once led as a member of Congress, to discuss his policy agenda. During the meeting, Rep. Chip Roy, R-Texas, thanked Pence for his actions on Jan. 6, according to a person familiar with the exchange who spoke on condition of anonymity to describe the closed-door meeting. Pence also committed to helping the GOP in the midterms and in 2024, though he did not explicitly say what role he intends to play.

He then headed to South Carolina for a speech at a Baptist church in South Carolina to discuss “the post-Roe world” after the Supreme Court overturned constitutional protections for abortions — a position he has long advocated.

Pence’s efforts come as Trump is preparing to launch a third campaign for the White House as soon as this summer while he faces a flurry of investigations into his efforts to stay in power. That includes the House Jan. 6 committee, which on Thursday will hold another prime-time hearing, this time spotlighting Trump’s refusal to call off the angry mob that stormed the Capitol and sent Pence and other lawmakers into hiding.

While polls show Trump remains the overwhelming favorite in a hypothetical GOP primary, Marc Short, Pence’s former chief of staff and a top adviser, argued that even if Trump does announce a run, that doesn’t necessarily mean he’ll be on the ballot two years from now.

“As the committee winds down, I’m sure he’s looking for a reset that brings attention back on him. And an announcement does not necessarily mean a commitment at the end of that process to continue forward,” said Short. “I don’t think there’s any doubt that the president enjoys being the center of attention. And the announcement puts even additional media focus on him.”

Trump, meanwhile, has continued to slam Pence for refusing to go along with his scheme to remain in power. At a gathering of Evangelical Christians in Nashville, Tennessee, last month, Trump again said Pence “did not have the courage to act,” drawing applause.

When it comes to a potential race, Trump does not see Pence as a threat, according to allies, who are much more concerned with Ron DeSantis. The Florida governor is increasingly seen by conservatives as a natural and younger successor to Trump’s MAGA movement who can channel the same energy.

Senate Minority Leader Mitch McConnell on Tuesday predicted Trump will face competition in 2024 if he enters the race.

“I think we’re going to have a crowded field for president,” he told reporters.

Asked if Pence should run, Sen. Mitt Romney, R-Utah, a frequent Trump critic, said it’s up to Pence, who has said he’ll make a decision after the midterms. “The more the merrier,” Romney said.

Jennings, meanwhile, praised Pence for being willing to stand up to Trump when so many others in the party still refuse to cross him.

“What Mike Pence is doing is extremely valuable. And whether he is a viable candidate for president, I don’t know. But he’s certainly earned the right to make the case for a post-Trump future,” said Jennings.

“He may end up being John the Baptist to someone else,” he added. “Headless but remembered well.”