Nearly a third of sitting US senators belong to fraternities or sororities. See the full list.
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- Fraternities and sororities have cultural dominance on many US college campuses.
- Ties to Greek life organizations can last long after college and offer access to powerful networks.
- Nearly a third of the US Senate comprises Greek life alumns from across the nation.
Beyond party affiliation, there are some lesser-known loyalties tied to lawmakers in Washington, DC.
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Greek life fraternities and sororities, which often dominate social life in colleges and universities across the US, also have some of the strongest footprints in the Capitol.
In the 119th Congress, just under a third of US senators are affiliated with a Greek organization, according to the Fraternity and Sorority Political Action Committee, which aims to "help more Greek alumnae get elected to the House or Senate for the first time."
In years with congressional races throughout the country, the political action committee — often nicknamed the "Frat PAC" — can play a significant financial role. In the 2023-24 election cycle, the PAC raised over $900,000. Today, it has raised over $650,000 for the 2025-26 cycle, toward a $1 million goal.
While funding goes toward the campaigns of Greek-life alumns, the committee does not align with one party over the other. FSPAC said that in the 2023-24 cycle, 52% of funds went to Republican candidates and 48% to Democratic candidates out of the 97 congressional campaigns it donated to.
Beyond nationally organized fundraising, Greek life organizations also offer their lifelong members access to a network of powerful connections in the Capitol and beyond.
See the 32 Greek-life-affiliated senators sitting in Congress, as listed by FSPAC.
Jim BanksEric Lee/Getty Images
State: Indiana
Party: Republican
Organization: Delta Chi
John BarrassoAlex Wong/Getty Images
State: Wyoming
Party: Republican
Organization: Phi Kappa Tau
Michael BennetSenator Michael Bennet, a Democrat from Colorado, ______.Bloomberg/Getty Images
State: Colorado
Party: Democratic
Organization: Beta Theta Pi
Marsha BlackburnRoberto Schmidt/Getty Images
State: Tennessee
Party: Republican
Organization: Chi Omega
Lisa Blunt RochesterTom Williams/CQ-Roll Call, Inc via Getty Images
State: Delaware
Party: Democratic
Organization: Alpha Kappa Alpha
Katie BrittEric Lee/Getty Images
State: Alabama
Party: Republican
Organization: Chi Omega
Shelley Moore CapitoTom Williams/CQ-Roll Call, Inc via Getty Images
State: North Dakota
Party: Republican
Organization: Local (non-national) Alpha Chi Alpha fraternity at Dartmouth College
John KennedyAaron Schwartz/Bloomberg via Getty Images
State: Louisiana
Party: Republican
Organization: Sigma Nu
Angus KingBill Clark/CQ-Roll Call, Inc via Getty Images
State: Maine
Party: Independent
Organization: Delta Upsilon
Roger MarshallMichael M. Santiago/Getty Images
State: Kansas
Party: Republican
Organization: Beta Theta Pi
Mitch McConnellSenator Mitch McConnell, a Republican from Kentucky, speaks to members of the media as he arrives at the US Capitol in Washington, DC, US, on Monday, Sept. 14, 2026. McConnell returned to the US Senate on Monday for the first time since suffering from a fall at his home on June 14. Photographer: Pete Kiehart/Bloomberg via Getty ImagesPete Kiehart/Bloomberg via Getty Images
State: Kentucky
Party: Republican
Organization: Phi Kappa Tau
Ashley MoodyTom Williams/CQ-Roll Call, Inc via Getty Images
State: Florida
Party: Republican
Organization: Alpha Delta Pi
Jerry MoranBill Clark/CQ-Roll Call, Inc via Getty Images
State: Kansas
Party: Republican
Organization: Alpha Tau Omega
Lisa MurkowskiDaniel Heuer/Bloomberg via Getty Images
State: Alaska
Party: Republican
Organization: Pi Beta Phi
Alex PadillaEric Lee/Getty Images
State: California
Party: Democratic
Organization: Zeta Psi
Gary PetersFinn Gomez/Getty Images
State: Michigan
Party: Democratic
Organization: Local (non-national) Zeta Sigma fraternity at Alma College.
Jim RischTom Williams/CQ-Roll Call, Inc via Getty Images
State: Idaho
Party: Republican
Organization: Phi Delta Theta
Brian SchatzBill Clark/CQ-Roll Call, Inc via Getty Images
State: Hawaii
Party: Democratic
Organization: Local (non-national) Phi Delta fraternity at Pomona College
Eric SchmittChip Somodevilla/Getty Images
State: Missouri
Party: Republican
Organization: Alpha Kappa Lambda
Dan SullivanAndrew Harnik/Getty Images
State: Alaska
Party: Republican
Organization: Private club
Raphael WarnockEric Lee/Bloomberg via Getty Images
State: Georgia
Party: Democratic
Organization: Alpha Phi Alpha
Elizabeth WarrenDaniel Heuer/Bloomberg via Getty Images
State: Massachusetts
Party: Democratic
Organization: Kappa Alpha Theta
Roger WickerWojtek RADWANSKI / AFP via Getty Images
State: Mississippi
Party: Republican
Organization: Sigma Nu
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