Sen. Mark BegichMark Peter BegichAlaska Senate race sees cash surge in final stretch Alaska group backing independent candidate appears linked to Democrats Sullivan wins Alaska Senate GOP primary MORE (D-Alaska) late Monday night added his voice to the growing chorus of Democratic senators announcing support for gay marriage ahead of Tuesday's hearing at the Supreme Court.

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"I believe that same-sex couples should be able to marry and should have the same rights, privileges and responsibilities as any other married couple," the Alaskan senator said in a statement obtained by Buzzfeed.

"Government should keep out of individuals' personal lives—if someone wants to marry someone they love, they should be able to. Alaskans are fed up with government intrusion into our private lives, our daily business, and in the way we manage our resources and economy," he continued.

The statement precedes oral arguments at the Supreme Court on Tuesday and Wednesday on a pair of cases examining states' and the federal government's ability to define marriage as a union between a man and a woman.

On Monday, Sens. Mark WarnerMark Robert WarnerHarris shares Thanksgiving recipe: 'During difficult times I have always turned to cooking' Biden leans on foreign policy establishment to build team Trump relents as GSA informs Biden transition to begin MORE (D-Va.) and Claire McCaskillClaire Conner McCaskillDemocrats must turn around Utah police arrest man driving 130 mph claiming he was going to kill former Missouri senator McCaskill congratulates Hawley on birth of daughter MORE (D-Mo.) also announced their support for gay marriage; last week, Republican Sen. Rob PortmanRobert (Rob) Jones PortmanBiden says transition outreach from Trump administration has been 'sincere' The Hill's 12:30 Report: Trump holds his last turkey pardon ceremony The Hill's Morning Report - Presented by the UAE Embassy in Washington, DC - Trump OKs transition; Biden taps Treasury, State experience MORE (Ohio) and former Secretary of State Hillary ClintonHillary Diane Rodham ClintonTrump says he'll leave White House if Biden declared winner of Electoral College Federal workers stuck it out with Trump — now, we're ready to get back to work Biden soars as leader of the free world MORE similarly announced shifts on the subject.

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The flood of lawmakers now backing same-sex marriage is partially an indication of shifting national attitudes. A Washington Post / ABC News poll released last week showed that 58 percent of Americans backed gay marriage, an all-time high.