The election on Tuesday in Georgia gained’t simply decide the destiny of the 2 Republican-held Senate seats there and the steadiness of management on Capitol Hill. It’ll additionally reveal the extent to which President Trump has disrupted and broken his personal celebration.

For the final a number of weeks, Mr. Trump has instigated and intensified a battle royal inside the Georgia Republican universe as he has sought to overturn his loss there and pin blame on the state’s G.O.P. leaders for not serving to him.

In response, the state’s Republicans have turned on each other, taking sides for or in opposition to Mr. Trump as he continues in his obstinate — some say unlawful — effort to overturn the election ends in Georgia, the place he misplaced by nearly 12,000 votes.

The result of those Senate elections will present, on one stage, how Republican voters have reacted to Mr. Trump’s quest to upend what he has falsely referred to as a “rigged” election.

If Republicans don’t finally end up in giant numbers, the blame will fall a minimum of partly on Mr. Trump for his efforts to boost doubts in regards to the equity of the state’s election course of.

The extent to which Mr. Trump is prepared to go in that effort grew to become totally obvious on Saturday, when he phoned Brad Raffensperger, Georgia’s secretary of state and a Republican, urging him to “find” votes and recalculate the outcomes of the state’s presidential contest in his favor, ignoring the official discovering, already licensed by the governor, that he was the loser.

It was the fruits of efforts to overturn the election that started practically two months in the past. The Trump marketing campaign and its surrogates have filed a number of lawsuits difficult election ends in Georgia; demanded recounts and Mr. Raffensperger’s resignation; combed obituaries to search out supposed “useless folks” who voted; requested that the legislature decertify the state’s Electoral School vote; and pressed for hearings, the place Rudolph W. Giuliani, Mr. Trump’s private lawyer, repeated unfounded claims of fraud.

At each flip, Mr. Raffensperger and different Georgia election officers have debunked the conspiracy theories about voter fraud pushed by the president and his allies.

The short-term affect of Mr. Trump’s strain marketing campaign will develop into evident because the votes are counted within the runoff elections pitting David Perdue and Kelly Loeffler, the 2 Republicans combating to maintain their Senate seats, in opposition to two Democrats, Jon Ossoff and the Rev. Raphael Warnock.

For Republicans within the state, the priority all alongside has been that Mr. Trump’s effort to undermine the election course of will depress turnout within the runoff, partly as a result of he has stoked beliefs that the system itself is rigged and can’t be trusted.

Charles S. Bullock III, a professor of political science on the College of Georgia, mentioned Mr. Trump’s cellphone name Saturday may additionally flip among the president’s former supporters in opposition to the Republican candidates.

“They might say, ‘This has gone too far. I can’t vote in opposition to Trump, however I can vote in opposition to his surrogates,’” Mr. Bullock mentioned in an interview Monday.

Mr. Trump’s efforts to litigate, cajole and threaten his technique to a Georgia victory started inside days of the Nov. 3 election. He was main because the early returns got here in. However as absentee ballots have been counted within the days that adopted, his margin narrowed, and it grew to become obvious that former Vice President Joseph R. Biden Jr. would take Georgia and its 16 electoral votes.

The Related Press declared Mr. Biden the winner in Georgia on Nov. 13.

On Nov. 9, Ms. Loeffler and Mr. Perdue — who’ve trumpeted their loyalty to the president — took the bizarre step of demanding Mr. Raffensperger’s resignation, calling the election a humiliation and leveling unfounded claims that his workplace oversaw a defective course of.

A civil engineer and former state lawmaker, Mr. Raffensperger was elected in 2018 after receiving a glowing endorsement from Mr. Trump. Showing desperate to assuage the president’s issues, Mr. Raffensperger agreed to conduct an uncommon statewide hand recount of the election, one which price counties a whole lot of 1000’s of {dollars}. It reaffirmed Mr. Biden’s victory. So did a subsequent machine recount.

As Mr. Trump’s marketing campaign and its supporters filed lawsuits in numerous Georgia jurisdictions, Mr. Trump escalated assaults in opposition to one other stalwart Republican, Gov. Brian Kemp.

By early December, Mr. Kemp, together with Geoff Duncan, the Georgia lieutenant governor who can also be a Republican, had issued a joint assertion refusing requests by Mr. Trump’s supporters to name a particular session of the Georgia legislature to overturn Mr. Biden’s victory.

“Doing this so as to choose a separate slate of presidential electors isn’t an possibility that’s allowed beneath state or federal legislation,” the assertion mentioned.

The Georgia legislature was not anticipated to reconvene till Jan. 11, properly after the Electoral School licensed Mr. Biden’s victory in Georgia. The state’s prime officers, together with David Ralston, the Republican speaker of the Home, held agency to that date, drawing a vivid line past which they might not go to mollify Mr. Trump.

“I’d remind folks if we overturn this one, there could possibly be one overturned on us sometime,” Mr. Ralston told The Atlanta Journal-Constitution. “We simply need to be very cautious about how we act out our frustrations and issues and perceive that this stuff can occur once more sometime.”

A recount, regardless that it was expensive, was one factor. Overturning a legitimate election was one other. Voicing his displeasure, Mr. Trump mentioned he was ashamed to have endorsed Mr. Kemp in 2018.

Mr. Raffensperger, a lifelong Republican, hinted Monday that the bickering may end result in the long run of practically 20 years of Republican dominance in statewide politics.

“The problems that Mr. Trump has been elevating — about all his contentions that he didn’t have a good vote right here — that has been a significant distraction for the 2 senators to run their race,” Mr. Raffensperger instructed Fox Information. “In truth, he’s, in impact, suppressing the Republican turnout.”

Invoice Crane, a Georgia political operative and commentator, mentioned the president’s techniques, in addition to the work of activists within the state who’ve claimed the November election was rigged, have been tamping down Republican turnout within the runoff elections. “Georgia continues to be conflicted about whether or not we should always vote in any respect,” Mr. Crane mentioned.

Fringe efforts by Trump allies could have helped dissuade some Republicans from voting for Mr. Perdue and Ms. Loeffler. A Twitter marketing campaign urging Georgia voters to “write in” the names of Mr. Trump and Vice President Mike Pence, which isn’t an possibility on the runoff poll, seems to be an outgrowth of Mr. Trump’s issues. And L. Lin Wooden, a conservative Georgia lawyer and Trump ally, has mentioned he is not going to vote in “one other fraudulent election.”

Knowledge from early voting confirmed that the turnout within the runoff election was depressed in closely Republican areas of the state, although analysts say that Republicans are inclined to favor voting on election day whereas Democrats usually tend to solid their ballots early.

Mr. Crane has referred to as Mr. Trump’s campaign a “fantasy soccer league drive” — one wherein Mr. Trump is pursuing his personal agenda, not the celebration’s.

To what finish isn’t precisely clear. However on Monday, throughout an look at a rally in Dalton, Ga., on behalf of his devoted supporters, Ms. Loeffler and Mr. Perdue, Mr. Trump vowed to make a return journey to marketing campaign in opposition to Mr. Raffensperger and Mr. Kemp.

“They are saying they’re Republicans,” Mr. Trump mentioned. “I actually don’t suppose so. They’ll’t be.”