COBB COUNTY, GA – Neither former President Donald Trump nor former Vice President Mike Pence are on the ballot in Georgia, but both were front-and-center in a combustible Republican Party feud on the eve of the Peach State’s primary.

Pence, headlining a rally for Gov. Brian Kemp, urged the governor’s supporters at an airport hangar in the northwest suburbs of Atlanta to "send a deafening message all across America that the Republican Party is the part of the future."

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Although he didn’t mention his former boss, Pence’s comment on Monday evening was an unmistakable jab at Trump, who for nearly a year and a half has repeatedly re-litigated his 2020 election loss to now-President Biden.

Mike Pence Brian Kemp

Former Vice President Mike Pence and Republican Gov. Brian Kemp shake hands with supporters after Pence headlined a primary eve rally for Kemp, on May 23, 2022, in Cobb County, Georgia. (Fox News)

As Pence and Kemp were shaking hands and taking selfies with supporters, Trump was the main attraction at a tele-rally for former Sen. David Perdue, who with Trump’s backing is challenging Kemp in the primary.

The former president repeated his unproven claims that 2020 election was "rigged and stolen" and once again blamed Kemp and Georgia Republican Secretary of State Brad Raffensperger for failing to overturn Biden’s razor-thin victory over Trump in the state.

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Four years ago, with the support of Trump, Kemp narrowly defeated Democrat Stacey Abrams. But Kemp earned Trump’s ire after certifying the 2020 presidential election results in Georgia, following two recounts of the vote. Trump traveled to Georgia last autumn to campaign against Kemp. He also repeatedly urged Perdue to primary challenge the governor and endorsed Perdue the day after the former senator announced his bid in December.

Perdue jumped into the race days after Abrams, a rising star in the Democratic Party and a nationally known champion of voter rights, launched her second straight gubernatorial bid. Trump returned to Georgia in late March to rally with Perdue, held a previous tele-rally for Perdue at the beginning of this month and starred in Perdue’s campaign commercials that ran on Georgia airwaves for much of this year. New financial disclosure forms show that the former president's main political action committee in April contributed over $2.5 million to an outside group backing Perdue.

Donald Trump and David Perdue at Georgia rally

Donald Trump shakes hands with former Sen. David Perdue, who's primary challenging GOP Gov. Brian Kemp, at the former president's rally in Cumming, Georgia, on March 26, 2022. (David Perdue campaign)

Trump on primary eve lit into Kemp, charging that "we have a governor that's done the worst job of any governor in probably decades on election integrity." 

He also argued that "Kemp is truly an embarrassment to the Republican Party because of what's taken place in your great state, Georgia. And David will make a massive upgrade as your governor."

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Minutes earlier in Cobb County, Pence predicted an "historic Republican victory six months from now when we will win back the House, win back the Senate, and re-elect Gov. Brian Kemp for four more years.

"I am here to support Brian Kemp."

Pence, who was the Republican governor of Indiana before Trump named him as his running mate in the 2016 presidential election, pushed back against the former president’s continuous claims that Trump supporters won’t back Kemp in November if he wins the GOP nomination.

Mike Pence Brian Kemp

Former Vice President Mike Pence teams up with Republican Gov. Brian Kemp at a rally on the eve of the state's primary, on May 23, 2022, in Cobb County, Georgia. (Fox News)

"Tomorrow’s primary election comes down to this – who is best positioned to defeat Stacey Abrams and the national Democrats that will descend on Georgia in this fall’s election," Kemp emphasized. "Brian Kemp beat Stacey Abrams four years ago and with your help, Brian Kemp will do it all again in November."

Sixteen months removed from the White House, Trump remains the most popular and influential politician in the GOP as he continues to play a kingmaker’s role in party, endorsing scores of candidates up and down the ballot in the 2022 midterms. Trump also repeatedly flirts with making another presidential run in 2024.

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But Trump’s support doesn’t appear to have boosted Perdue, with the final polls in the race indicating Kemp with large double-digit leads over his challenger and likely to clear the 50% threshold needed to avoid a runoff next month.

Pence, a loyal wing man for Trump during their four years in the White House, broke with his boss over the deadly Jan. 6, 2021, attack on the U.S. Capitol perpetrated by right wing extremists aiming to disrupt congressional certification of Biden’s Electoral College victory, which the then-vice president oversaw.

In the ensuing months, Pence – while defending the achievements of the Trump-Pence administration – has increasingly distanced himself from his former boss. 

In a line that seemed to be directed at Trump, Pence stressed that "there are those who want to make this election about the past." He added that "when you say yes to Gov. Brian Kemp tomorrow, you will send a deafening message all across America that the Republican Party is the party of the future."

Pence didn’t mention Trump and the former president didn’t utter his former vice president’s name at their dueling rallies.

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Earlier on Monday, however, Trump spokesman Taylor Budowich tore into Pence, claiming that "Mike Pence was set to lose a governor’s race in 2016 before he was plucked up and his political career was salvaged."

Budowich further argued that "now, desperate to chase his lost relevance, Pence is parachuting into races, hoping someone is paying attention."

Fox News' Jake Karalexis contributed to this report