The three-term senator, who cited extreme partisanship when announcing she wouldn’t seek reelection last year, said, "We are a representative democracy, and we get the government we demand, and if we value and insist on bipartisanship, we will get it." 

She added, "I want people to know their voices do make a difference."

When asked by The Hill which lawmakers she would consider examples of politicians who embody a commitment to bipartisanship, she named Maine Sens. Susan CollinsSusan Margaret CollinsCollins: 'Extremely disappointing' ObamaCare fix left out of spending deal Overnight Cybersecurity: Zuckerberg breaks silence on Cambridge Analytica | Senators grill DHS chief on election security | Omnibus to include election cyber funds | Bill would create 'bug bounty' for State GOP lawmakers blast Dems for opposing ObamaCare fix MORE (R) and Angus KingAngus Stanley KingLindsey Graham: Trump firing Mueller would 'probably' be impeachable offense Angus King: McCabe firing seemed 'mean-spirited' With bills on the table, Congress must heed the call to fix our national parks MORE (I), as well as Mark WarnerMark Robert WarnerZuckerberg: Maybe tech should face some regulations Dem senator responds to Zuckerberg: 'You need to come' testify Lawmakers zero in on Zuckerberg MORE (D-Va.), and Lisa MurkowskiLisa Ann MurkowskiProposed budget for Indian Health Services won't treat Native American patients equally Keep anti-environment riders for Alaska out of spending bill Industry should comply with the Methane Waste Prevention Rule MORE (R-Alaska).

A bevy of former Capitol regulars were eyed at the book party, including former Sens. Trent Lott (R-Miss.), Byron Dorgan (D-N.D.), Blanche Lincoln (D-Ark.), and former Reps. Connie Morella (R-Md.) and Mike Castle (R-Del.).  

"We have a lot of former members and some current members who believe that compromise is not a bad word — it is in fact how things get done," Morella told The Hill.  Morella is now the President of the Association of Former Members of Congress. Snowe sits on the board of the association.

Former Mississippi Gov. and Republican National Committee (RNC) Chair Haley Barbour was also spotted at the event. Barbour co-chairs the Bipartisan Policy Center's Immigration Task Force.  

"The eight years I was governor of Mississippi, we had a Democratic majority in the House every day, a Democratic majority in the Senate seven years out of eight — to pass anything I had to get Democratic votes," said Barbour.  

"I'm very accustomed to working in a bipartisan way — that's what I had to do to get things done in Mississippi, and at the end of the day, what you're paid for is getting things done."