The Senate Intelligence Committee announced Friday that it will hold a rare open session to question senior intelligence officials on Russian hacking activities.

The hearing will come the day after the White House is expected to make public a declassified version of a hotly anticipated report from the intelligence community detailing Russian interference in the U.S. election. A classified version will go to Congress.

Four blockbuster witnesses will testify on Tuesday: Director of National Intelligence James Clapper, CIA Director John Brennan, National Security Agency Director Adm. Michael Rogers and FBI Director James Comey.

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Clapper and Rogers testified on the matter before the Senate Armed Services Committee on Thursday but provided few new details, arguing that they did not want to preempt the report.

The Intelligence Committee hearing will be watched particularly closely for clues as to how Republicans will tackle the investigation into Russian involvement in the election. Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellSenate Republicans signal openness to working with Biden Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll The Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally MORE (R-Ky.) has said he believes the issue is best handled by that notoriously secretive panel — a move critics say was an attempt to sweep the matter under the rug.

President-elect Donald Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE has continued to deny that Moscow was behind the hack of the Democratic National Committee (DNC) and others.

Comey’s testimony will also be closely watched.

Many Democrats — include former Senate Minority Leader Harry Reid Harry Mason ReidSenate Republicans signal openness to working with Biden Mellman: The likely voter sham Bottom line MORE (D-Nev.) — have explicitly blamed him for Hillary Clinton Hillary Diane Rodham ClintonBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Virginia Democrat blasts Trump's 'appalling' remark about COVID-19 deaths in 'blue states' The Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally MORE's loss in November. They have accused him of doggedly pursuing the investigation into Clinton’s private email server while neglecting to give the breach at the DNC the attention it deserved.