The Senate set a new record for the longest vote in modern history Friday as the chamber votes on restricting President TrumpDonald John TrumpProgressive group launches M pro-Biden ad buy targeting young voters Ilhan Omar: GOP response to calls for police reform 'was vicious' White House considers sweeping travel ban on members, families of the Chinese Communist Party: report MORE's ability to take military action against Iran without congressional approval. 
The Senate is normally out of town on Friday, but stuck around to give 2020 Democratic candidates a chance to vote on the amendment, from Sens. Tim KaineTimothy (Tim) Michael KaineFinger-pointing, gridlock spark frustration in Senate Russian bounties revive Trump-GOP foreign policy divide Overnight Defense: Lawmakers demand answers on reported Russian bounties for US troops deaths in Afghanistan | Defense bill amendments target Germany withdrawal, Pentagon program giving weapons to police MORE (D-Va.) and Tom UdallThomas (Tom) Stewart UdallHispanic Democrats build capital with big primary wins Senate rejects Paul proposal on withdrawing troops from Afghanistan OVERNIGHT ENERGY: House Democrats chart course to 'solving the climate crisis' by 2050 | Commerce Department led 'flawed process' on Sharpiegate, watchdog finds | EPA to end policy suspending pollution monitoring by end of summer MORE (D-N.M.), that would block Trump from using funding to take military action against Iran without congressional approval. 
The vote clocked in at 10 hours when it wrapped up just after 3 p.m.
In an effort to balance the 2020 demands and senators who had already planned trips, the Senate came into session at 5 a.m., several hours earlier than a normal week day. 
Several senators voted within minutes of the vote opening, including Sens. Dick DurbinRichard (Dick) Joseph DurbinThe Hill's Morning Report - Presented by Argentum - All eyes on Florida as daily COVID-19 cases hit 15K Democrats see immigration reform as topping Biden agenda GOP senators voice confidence over uphill Senate battle MORE (D-Ill.), Martha McSallyMartha Elizabeth McSallyHickenlooper reports record fundraising haul in Colorado Senate bid The Hill's Morning Report - Presented by Argentum - In Rose Garden, Trump launches anti-Biden screed Trump hits road to ignite stalled campaign MORE (R-Ariz.), Dan SullivanDaniel Scott SullivanBottom line US security starts in the Arctic Senate confirms nation's first African American service chief MORE (R-Alaska) and Jon TesterJonathan (Jon) TesterInternal poll shows tight battle in Montana House race Bipartisan Senate group offers bill to strengthen watchdog law after Trump firings Senate confirms Trump's watchdog for coronavirus funds MORE (D-Mont.). 
And Sen. David Perdue (R-Ga.), spotting reporters as he entered the Capitol, quipped, "You've got to be kidding me? Six a.m., really?" 
The previous record for the longest vote in modern history was in December, when senators kept a vote open for more than five hours as they made a failed attempt to avoid a partial government shutdown. 
Friday's early voting, and long hours, wasn't without unusual moments. 
Sen. Josh HawleyJoshua (Josh) David HawleyTwitter accounts of Obama, Biden, Musk and others compromised Larry Hogan's hopes Hawley fires back at ESPN, NBA over China MORE (R-Mo.) tried to inject some humor into the proceedings five hours into the Senate session by asking a largely empty chamber if "any senator wanted to vote or change their vote." 
After roughly six hours of Republicans presiding over the GOP-controlled chamber, they took an unusual step of letting Democrats preside, with Senate Minority Leader Charles SchumerChuck SchumerHow a progressive populist appears to have toppled Engel MJ Hegar wins Democratic battle to challenge John Cornyn Dunford withdraws from consideration to chair coronavirus oversight panel MORE (D-N.Y.) taking over.  
There was talk amongst senators that there wouldn't be enough Republican senators in Washington with the start of the Fourth of July recess for them to preside over the Senate for an hours-long last-minute session. 
Normally when the Senate is in session one Republican senator presides over the chamber, with the responsibility rotating amongst lawmakers throughout the day. 
Tester told reporters on Thursday that Democrats were being lined up to help preside over the chamber, adding, "I never saw it happen when we were in the majority."