WASHINGTON - No matter who wins the White House on Tuesday, the next US president is likely to enter office under the threat of investigation by the rival party, according to an American newspaper.

“Hillary Clinton and Donald Trump are both deeply polarising figures unlikely to enjoy a period of goodwill from the other side of the aisle,” The Hill, is a top US political website, said in a dispatch.

Multiple Republicans this week have predicted impeachment could be on the table if Clinton wins, a possibility Trump has mentioned in a late effort to boost his bid for the White House. “The climate, the atmosphere, the vitriolic nature of our politics does not change on Nov. 9,” one former top Democratic House staffer was quoted as saying.

And while Republicans are likely to control at least one chamber of Congress next year, Democrats would almost certainly seek to launch their own inquiries into Trump, should he triumph on Tuesday. Congressman Michael McCaul, the Texas Republican and House Armed Services chairman, has repeatedly warned of a rocky road for Clinton if she wins.

This week, he called Clinton’s handling of classified information “treason.” A day later, he suggested she could be impeached if elected. A handful of other Republican lawmakers, including Senator Ron Johnson, who is up for reelection, have recently entertained investigations or impeachment proceedings for Clinton. Johnson, the chairman of the Senate Homeland Security Committee, told a local paper this week that Clinton’s conduct at State would meet the standard for removal from office if she were elected.  

But some top Republicans, such as Senate Majority Whip John Cornyn, have tried to throw cold water on the impeachment talk. “Using that word before an election is just very premature,” said Republican strategist and former top House Republican aide Ron Bonjean, who characterize impeachment talk as “overreach.”

But he echoed Republican lawmakers who say that simply investigating Clinton shouldn’t be seen as partisan, particularly if there’s an active FBI investigation into the next president. “As long as there’s an official FBI investigation, it remains nonpartisan,” Bonjean added.

But Clinton played down the damage of the probe, telling a rally in the swing state of Ohio that “there’s no case here” and that she’s confident no charges will be made. While it would be difficult for Democrats to launch investigations into Trump’s business dealings if Trump wins the White House and Republicans almost control both chambers of Congress, Democrats could use informal hearings, press events or other ways to generate attention, according to The Hill.

“It doesn’t really take a congressional committee to do anything for those to continue on. The Trump University trial is going to continue on, all the litigation in regards to his business will continue on,” another former top House Democratic staffer was quoted as saying.

“Senate Democrats would need to relearn how to, after 8 years of a Democratic president, play the investigation and oversight team. They aren’t going to have subpoena power but they will have many ways to fashion attacks,” former Senate Democratic aide Jim Manley said.

Calling the Republican’s career a “target-rich environment,” Manley said he doesn’t believe Americans wouldn’t see investigating Trump’s taxes or his potential ties to Russia as a partisan issue.