With the outcome of a Senate vote on President 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's impeachment all but completely certain to end with his acquittal, the dramatic atmosphere surrounding his trial at the Capitol is quickly fizzling.

After two weeks of a high-octane, at times frantic, energy around the Senate — with reporters hungry for any quotes amid a crackdown on press access — Monday took a more subdued tone.

The reasons are likely twofold: After dominating the news cycle, attention is shifting this week to the Iowa caucuses, the 2020 race and Trump's State of the Union address.

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In addition, after Friday's Senate vote against hearing new witnesses, much of the drama has been sucked out of the trial.

Sen. Mike Braun Michael BraunPessimism grows as hopes fade for coronavirus deal McConnell shores up GOP support for coronavirus package Patient Protection Pledge offers price transparency MORE (R-Ind.) predicted that the 2020 fight would “quickly take over the discussions.”

“There was so much leading up to last week’s witness fight, this almost feels like it’s anticlimactic,” Braun said.

Sen. Roy Blunt Roy Dean BluntOn The Money: Trump undercuts GOP, calls for bigger COVID-19 relief package | Communities of color hit hardest financially by COVID-19 | Businesses, states pass on Trump payroll tax deferral Trump undercuts GOP, calls for bigger COVID-19 relief package Businesses, states pass on Trump payroll tax deferral MORE (R-Mo.), a member of GOP leadership, added that “Democrat and Republicans I believe will be relieved to move on” and that the schedule for the trial this week was “locked down.”

Sen. Richard Shelby Richard Craig ShelbyDems discussing government funding bill into February GOP short of votes on Trump's controversial Fed pick This week: House returns for pre-election sprint MORE (R-Ala.), one of the 15 senators in the chamber during former President Clinton's impeachment trial, noted that Trump's trial was turning out to be less dramatic than the 1999 proceeding or a blockbuster fight in 2018 over then-Supreme Court nominee Brett Kavanaugh Brett Michael KavanaughGideon leads Collins by 12 points in Maine Senate race: poll Conservatives see glaring omission on Trump's Supreme Court shortlist Cruz says he wouldn't accept Supreme Court nomination MORE.

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“I thought that there was a lot more intensity in Kavanaugh than this,” Shelby said. “I think this was a foregone conclusion.”

Kavanaugh’s trial, roiled by allegations of sexual assault, marked a high point in tensions around the Capitol, including high-profile confrontations between protesters and Sens. Joe Manchin Joseph (Joe) ManchinSenate leaders quash talk of rank-and-file COVID-19 deal OVERNIGHT ENERGY: House Democrats tee up vote on climate-focused energy bill next week | EPA reappoints controversial leader to air quality advisory committee | Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' Senate Democrats demand White House fire controversial head of public lands agency MORE (D-W.Va.) and then-Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeRepublican former Michigan governor says he's voting for Biden Maybe they just don't like cowboys: The president is successful, some just don't like his style Bush endorsing Biden? Don't hold your breath MORE (R-Ariz.).

“I don’t think this has been as stressful for members as Kavanaugh was,” Blunt said, noting that Kavanaugh was decided on a simple majority, while impeachment has the higher bar of two-thirds for conviction.

The shift in tone was reflected both on and off the floor on Monday.

Several Republicans — including Sens. Mike Rounds Marion (Mike) Michael RoundsSenate Republicans signal openness to working with Biden 2024 GOP presidential rivalries emerge on virus package Davis: The Hall of Shame for GOP senators who remain silent on Donald Trump MORE (R-S.D.) and John Barrasso John Anthony BarrassoOVERNIGHT ENERGY: Democrats push resolution to battle climate change, sluggish economy and racial injustice | Senators reach compromise on greenhouse gas amendment stalling energy bill | Trump courts Florida voters with offshore drilling moratorium Senators reach compromise on greenhouse gas amendment stalling bipartisan energy bill The Hill's Morning Report - Sponsored by National Industries for the Blind - Trump, Biden battle over vaccine, economy; Congress returns MORE (R-Wyo.), the No. 3 Senate Republican — skirted through the basement and through a crowd of reporters without a question being asked of them.

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As Republicans trickled in to their caucus lunch, reporters — stuck behind press pens — largely ignored them without attempting to ask questions.

Sen. Shelley Moore Capito Shelley Wellons Moore CapitoGOP senator to quarantine after coronavirus exposure Hillicon Valley: Zuckerberg acknowledges failure to take down Kenosha military group despite warnings | Election officials push back against concerns over mail-in voting, drop boxes Bipartisan senators call for investigation of popular fertility app MORE (R-W.Va.) was asked as she exited what food senators ate. Capito, still appearing to be munching, said it was "good" and kept walking.

There were some exceptions to the laid-back atmosphere. Both Sens. Doug Jones (D-Ala.) and Lisa Murkowski Lisa Ann MurkowskiGOP ramps up attacks on Democrats over talk of nixing filibuster OVERNIGHT ENERGY: House Democrats tee up vote on climate-focused energy bill next week | EPA reappoints controversial leader to air quality advisory committee | Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' House Democrats tee up vote on climate-focused energy bill next week MORE (R-Alaska) attracted a crowd of reporters as they walked through the basement.

Murkowski, who voted against calling witnesses, reiterated that she had made a decision on whether to convict Trump; she did not share her decision.

Jones, meanwhile, indicated he was still undecided but "getting there." Jones, who is up for reelection in the deeply red state of Alabama, is viewed as one of three potential Democratic swing votes.

On the floor, Jones was spotted leaning over his desk taking notes during Monday’s closing arguments.

Meanwhile, Manchin, viewed as a potential swing vote, sat throughout the closing arguments with a notebook open on his desk, glasses off and head resting in hand. He was spotted briefly taking notes during the White House closing argument but otherwise was in listening mode.

Other Democrats, including Sens. Martin Heinrich Martin Trevor HeinrichSenate Democrats demand White House fire controversial head of public lands agency Senate Democrats seek removal of controversial public lands head after nomination withdrawal Five takeaways from final Senate Intel Russia report MORE (D-N.M.) and Cory Booker Cory Anthony BookerDemocratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility Black Voters Matter Fund deploying voter outreach caravans in 12 states to drive turnout Philanthropist Susan Sandler investing 0M in social justice organizations MORE (D-N.J.), sat and listened with their desks empty. Sen. Chris Murphy Christopher (Chris) Scott MurphyGOP chairman to release interim report on Biden probe 'in about a week' This week: House returns for pre-election sprint Battle over timing complicates Democratic shutdown strategy MORE (D-Conn.) had a large binder on his desk but didn't appear to be taking notes.

Several Republicans, including Shelby, Lindsey Graham Lindsey Olin GrahamSenate Republicans signal openness to working with Biden Loeffler calls for hearing in wake of Netflix's 'Cuties' Quinnipiac poll shows Graham, Harrison tied in South Carolina Senate race MORE (S.C.) and James Lankford James Paul LankfordMcConnell works to lock down GOP votes for coronavirus bill Charities scramble to plug revenue holes during pandemic Warren calls for Postal Service board members to fire DeJoy or resign MORE (Okla.), similarly sat with their desks empty. Graham left the GOP lunch early and wasn’t spotted at his desk on the floor during the White House's closing arguments or the Democrats' rebuttal.

Monday's proceeding comes the same day as the Iowa caucuses, grounding the four 2020 hopefuls in Washington for part of the day.

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Sen. Bernie Sanders Bernie SandersSenate 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 Schumer, Sanders call for Senate panel to address election security MORE (I-Vt.) leaned back in his chair, hands folded as he listened, rarely moving to take notes. Sen. Amy Klobuchar Amy KlobucharEPA delivers win for ethanol industry angered by waivers to refiners It's time for newspapers to stop endorsing presidential candidates Biden marks anniversary of the Violence Against Women Act, knocks Trump and McConnell MORE (D-Minn.) shared a look with Sen. Christopher Coons Christopher (Chris) Andrew CoonsShakespeare Theatre Company goes virtual for 'Will on the Hill...or Won't They?' The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep Conservative activist Lauren Witzke wins GOP Senate primary in Delaware MORE (D-Del.) after the White House played a tape of the Delaware senator talking at a White House bill signing. Meanwhile, Sen. Elizabeth Warren Elizabeth WarrenNo new taxes for the ultra rich — fix bad tax policy instead Democrats back away from quick reversal of Trump tax cuts It's time for newspapers to stop endorsing presidential candidates MORE (D-Mass.) briefly spoke with reporters before speeding out of the Capitol once the trial wrapped for the day.

After taking the reins last week for the question-and-answer session and the fight over witnesses, senators appeared restless once again.

Sen. Bill Cassidy William (Bill) Morgan CassidySenators offer disaster tax relief bill Bottom line Rep. Dan Meuser tests positive for COVID-19 MORE (R-La.) paced the sidelines of the chamber, while Sen. Tim Kaine Timothy (Tim) Michael KaineThe Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep Catholic group launches .7M campaign against Biden targeting swing-state voters GOP senator to quarantine after coronavirus exposure MORE (D-Va.) could be overheard jiggling his pen on his ankle. Several senators, including Sens. John Hoeven John Henry HoevenDavis: The Hall of Shame for GOP senators who remain silent on Donald Trump Bottom line Bipartisan senators seek funding for pork producers forced to euthanize livestock MORE (R-N.D.) and Gary Peters Gary Charles PetersPostal service changes delayed 7 percent of nation's first-class mail: Democratic report GOP votes to authorize subpoenas, depositions in Obama-era probe GOP sees pressure on Pelosi as key to pandemic relief deal MORE (D-Mich.), stood for part of the closing arguments.

As many as a dozen Republican senators were missing during final rebuttal from House Democrats, though that number was reduced to only a handful as House Intelligence Committee Chairman Adam Schiff Adam Bennett SchiffOvernight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies Intelligence chief says Congress will get some in-person election security briefings Democrats, advocates seethe over Florida voting rights ruling MORE (D-Calif.) wrapped. Some could be seen chatting in the cloakroom as House Democrats spoke on the floor.

Democrats are trying to keep pressure on Republican senators ahead of Wednesday’s votes on conviction.

Senate Minority Leader Charles Schumer Chuck SchumerDemocrats scramble on COVID-19 relief amid division, Trump surprise Pelosi, Schumer 'encouraged' by Trump call for bigger coronavirus relief package Schumer, Sanders call for Senate panel to address election security MORE (D-N.Y.) praised Schiff, calling his closing remarks “just about the best speech I’ve ever heard.”

"He points to our Republican colleagues and says, 'You are not him. Don't follow him down this path.' I was so moved by his speech, and I hope maybe it pierced the hardness that is put in front of so many of our Republican colleagues," he said. "Let’s hope and pray. If that didn't do it, I don't know what would."