WASHINGTON — The second season of impeachment had ended lower than a day earlier, however Republicans had been already speaking about subsequent season. It sounded ominous.

“I don’t know the way Kamala Harris doesn’t get impeached if the Republicans take over the Home,” Senator Lindsey Graham, Republican of South Carolina, mentioned Sunday morning on Fox Information.

Mr. Graham gave the impression to be suggesting that the vp may be punished as a result of she had expressed assist for a bail fund for Black Lives Matter protesters in Minnesota final summer season. “She really bailed out rioters,” Mr. Graham charged. That assertion was false, however his risk was plain: Republicans can impeach, too.

In latest days, former President Donald J. Trump’s defenders have darkly accused Democrats of opening a “Pandora’s field” of partisan retribution — resulting in a type of anything-goes future in politics, the place impeachments get volleyed backwards and forwards between the 2 events like a tennis match, relying on which aspect controls Congress. “Partisan impeachments will grow to be commonplace,” mentioned Bruce L. Castor Jr., one in every of Mr. Trump’s legal professionals, as he argued the previous president’s case earlier than the Senate on Tuesday.

There’s a component of plausibility right here, given the hyperpartisan fervor that’s gripped American politics. However within the ensuing surroundings, Republicans appear to be saying that even essentially the most outlandish accusations towards a president — similar to these hurled at President Biden by Consultant Marjorie Taylor Greene, a Republican of Georgia in her first days in Congress — ought to be handled the identical as what Democrats impeached Mr. Trump over.

In a broader sense, officers of each events have recommended that common impeachments may grow to be one in every of a number of common options of a brand new and bitter regular in our politics. Beforehand uncommon or unthinkable measures might merely begin taking place on a regular basis

Democrats argue that, in reality, Republicans have opened a number of Pandora’s containers in recent times. They’ve taken unprecedented actions, led by Mr. Trump, which have abused sure norms to a level that has destabilized a set of once-reliable authorities traditions. Senate Republicans’ blockade of President Barack Obama’s nomination of Choose Merrick B. Garland to the Supreme Court docket in 2016, as an example, solid doubt on any future president’s means to fill a Supreme Court docket emptiness when the opposing social gathering managed the Senate.

By refusing to concede an election he clearly misplaced, after which sustaining repeatedly it had been stolen from him, Mr. Trump shattered what had been an undisturbed American customized making certain a peaceable switch of energy between administrations.

Mr. Trump’s false claims have persuaded a majority of Republican voters that Mr. Biden had not been legitimately elected, and led 147 Republican members of the Home and the Senate to vote towards the Jan. 6 certification of Electoral School votes. This stage of assist to overturn the election outcome raises the prospect of whether or not the once-pro forma train of certification may now devolve each 4 years right into a heated partisan spectacle — or, worse, riots.

It was the lethal assault on the Capitol, after all, that set into movement Mr. Trump’s second impeachment continuing. His legal professionals attributed the rebuke to not their shopper’s actions on Jan. 6 however fairly to his opponents’ irrational “hatred of President Trump.” They implied impeachment was a vindictive and frivolous maneuver.

Democrats bristle at such notions — that they’ve overused and thus cheapened the facility of impeachment, a instrument that has been employed solely 4 occasions in 244 years, however twice within the final 14 months. They agreed that impeachment ought to be reserved for extraordinary circumstances, however argued that Mr. Trump had engaged in a unprecedented diploma of dereliction.

“Look, there’s a purpose there’s been two impeachments of the identical man,” mentioned Senator Robert P. Casey Jr., Democrat of Pennsylvania, in an interview Friday, on the eve of the ultimate vote. “Trump has engaged in conduct that presidents of both social gathering would by no means have interaction in.”

It’s not like something about this has been enjoyable, he added. “The very last thing I wished to do these final 5 days is sit there and take heed to this hour after hour as an alternative of engaged on a full vary of points,” he mentioned.

Mr. Casey and others counsel that the Republican Get together is now dominated by a former president who has satisfied a lot of the social gathering that any opposition to them is pushed by “unhealthy, sick and corrupt individuals” and ought to be met with excessive ways.

“The expectation from our base is for retribution,” mentioned former Consultant Tom Rooney, a Republican of Florida who didn’t search re-election in 2018, partly to flee the acute partisanship that has overtaken Congress. When requested if his former Republican colleagues would transfer to question Mr. Biden subsequent 12 months in the event that they gained again the Home, even for one thing minor, Mr. Rooney rated the prospect as “completely attainable.”

“It won’t essentially be what a few of these guys wish to do, however it may be what the bottom expects,” he mentioned. “Folks need Armageddon.”

Let the therapeutic start!

Or not. For as a lot as Impeachment II ended on Saturday with a major variety of Republican senators (seven) voting to convict Mr. Trump — and was accompanied by robust statements from some who voted not responsible, together with the Republican Senate chief, Mitch McConnell — different defenders of the previous president turned their focus to a bitter way forward for impeachment roulette.

Senator Marco Rubio, Republican of Florida, recommended on Friday that former Secretary of State Hillary Clinton may begin wanting round for an excellent impeachment lawyer (as a result of, actually, what would partisan Armageddon be with out the Clintons?).

Mr. Rubio framed his assertion round a considerably tortured rhetorical query: “Is it not true that underneath this new precedent, a future Home dealing with partisan strain to ‘lock her up’ might impeach a former secretary of state and a future Senate compelled to place her on trial and probably disqualify from future workplace?”

It was not precisely clear whether or not Mr. Rubio was criticizing Mr. Trump for whipping up his supporters right into a frenzy that led to irrational calls for to imprison Mrs. Clinton, or whether or not he was accusing Democrats of performing irrationally themselves by impeaching Mr. Trump a second time in two years.

What was evident, nevertheless, was that Mr. Rubio was assuming the worst intentions by the opposition — and the sensation seems extraordinarily mutual. Cable and social media chatter have been awash in bleak situations.

“If Republicans take Congress, they might not solely impeach Biden and/or Harris,” Jon Favreau, a speechwriter for President Obama, tweeted on Sunday, “they might probably achieve overturning the outcomes of the 2024 election.”

Not everybody believes partisanship has reached the purpose the place Election Day will now merely grow to be the beginning of a two-month brawl each 4 years that can construct to a probably ugly climax in January.

“I don’t suppose we’re there but,” mentioned Brendan Buck, a Republican media strategist and former prime management aide to 2 former Republican audio system of the Home, Paul D. Ryan of Wisconsin and John A. Boehner of Ohio. He mentioned that many Home Republicans wound up voting towards Mr. Biden’s Electoral School certification solely as a result of they knew it could not go. If the outcome was extra doubtful, he contended, they might have voted to certify.

Nonetheless, Mr. Buck allowed that the present political and media surroundings rewarded conduct by lawmakers — and candidates — that’s excessive and even unheard-of. “We’re in an period the place you should make loud noises and break issues to be able to get consideration,” he mentioned. “It doesn’t matter what you’re breaking — so long as you’re creating battle and appeasing your social gathering, something goes.”

Mr. Trump himself is the exemplar of something goes, each by way of how efficient and damaging the strategy might be, mentioned Adam Jentleson, who was a deputy chief of employees to former Senator Harry Reid of Nevada, the Democratic chief, and writer of Kill Swap: The Rise of the Trendy Senate and the Crippling of American Democracy,a brand new e-book about legislative management dynamics.

Mr. Jentleson mentioned Republicans had deserted any coherent coverage objectives in lieu of pursuing a “damaging partisanship” agenda — which he defines as “doing merely no matter will terrorize your opponents essentially the most.” In essence, Trumpism.

This exhibits no indicators of abating anytime quickly. “That’s clearly what Republicans will proceed to run on,” Mr. Jentleson mentioned. “And that features impeaching whoever is in energy on the opposite aspect.”