The referenced website has references. Those I checked seemed solid.
Lots of chickenhawks on down this list.
Richard Gephardt: Air National Guard, 1965–71.
David Bonior: Staff Sgt., Air Force 1968–72.
Tom Daschle: 1st Lt., Air Force SAC 1969–72.
Al Gore: enlisted Aug. 1969; sent to Vietnam Jan. 1971 as an army journalist in 20th Engineer Brigade.
Bob Kerrey: Lt. j.g. Navy 1966–69; Medal of Honor, Vietnam.
Daniel Inouye: Army 1943-’47; Medal of Honor, WWII.
John Kerry: Lt., Navy 1966–70; Silver Star, Bronze Star with Combat V, Purple Hearts.
Charles Rangel: Staff Sgt., Army 1948–52; Bronze Star, Korea.
Max Cleland: Captain, Army 1965–68; Silver Star & Bronze Star, Vietnam.
Ted Kennedy: Army, 1951–1953.
Tom Harkin: Lt., Navy, 1962–67; Naval Reserve, 1968–74.
Jack Reed: Army Ranger, 1971–1979; Captain, Army Reserve 1979–91.
Fritz Hollings: Army officer in WWII, receiving the Bronze Star and seven campaign ribbons.
Leonard Boswell: Lt. Col., Army 1956–76; Vietnam, DFCs, Bronze Stars, and Soldier’s Medal.
Pete Peterson: Air Force Captain, POW. Purple Heart, Silver Star and Legion of Merit.
Mike Thompson: Staff sergeant, 173rd Airborne, Purple Heart.
Bill McBride: Candidate for Fla. Governor. Marine in Vietnam; Bronze Star with Combat V.
Gray Davis: Army Captain in Vietnam, Bronze Star.
Pete Stark: Air Force 1955–57
Chuck Robb: Vietnam
Howell Heflin: Silver Star
George McGovern: Silver Star & DFC during WWII.
Bill Clinton: Did not serve. Student deferments. Entered draft but received 311.
Jimmy Carter: Seven years in the Navy.
Walter Mondale: Army 1951–1953
John Glenn: WWII and Korea;six DFCs and Air Medal with 18Clusters.
Tom Lantos: Served in Hungarian underground in WWII. Saved by Raoul Wallenberg.
Dennis Hastert: did not serve.
Tom Delay: did not serve.
Roy Blunt: did not serve.
Bill Frist: did not serve.
Mitch McConnell: did not serve.
Rick Santorum: did not serve.
Trent Lott: did not serve.
Dick Cheney: did not serve. Several deferments, the last by marriage.
John Ashcroft: did not serve. Seven deferments to teach business.
Jeb Bush: did not serve.
Karl Rove: did not serve.
Saxby Chambliss: did not serve. “Bad knee.” The man who attacked Cleland’s patriotism.
Paul Wolfowitz: did not serve.
Vin Weber: did not serve.
Richard Perle: did not serve.
Douglas Feith: did not serve.
Eliot Abrams: did not serve.
Richard Shelby: did not serve.
Jon Kyl: did not serve.
Tim Hutchison: did not serve.
Christopher Cox: did not serve.
Newt Gingrich: did not serve.
Don Rumsfeld: served in Navy (1954–57) as aviator and flight instructor.
George W. Bush: failed to complete his six-year National Guard enlistment; got assigned to Alabama so he could campaign for family friend running for U.S. Senate; failed to show up for required medical exam, disappeared from duty.
Ronald Reagan: due to poor eyesight, served in a non-combat role making movies.
B‑1 Bob Dornan: Consciously enlisted after fighting was over in Korea.
Phil Gramm: did not serve.
John McCain: Silver Star, Bronze Star, Legion of Merit, Purple Heart and Distinguished Flying Cross.
Bob Dole: an honorable veteran.
Chuck Hagel: two Purple Hearts and a Bronze Star, Vietnam.
Duke Cunningham: nominated for Medal of Honor, Navy Cross, Silver Stars, Air Medals, Purple Hearts.
Jeff Sessions: Army Reserves, 1973–1986
Colin Powell: Long career in military management.
Don Nickles: National Guard, 1970–1976
Jim Inhofe, Army, 1954–1956
Dana Rohrabacher: did not serve.
John M. McHugh: did not serve.
JC Watts: did not serve.
Jack Kemp: did not serve. “Knee,” although continued in NFL for 8 years.
Dan Quayle: Journalism unit of the Indiana National Guard.
Rudy Giuliani: did not serve.
George Pataki: did not serve.
Spencer Abraham: did not serve.
John Engler: did not serve.
Lindsey Graham: National Guard lawyer.
Arnold Schwarzenegger: AWOL from Austrian army base.
George H.W.; Bush: Pilot in WWII. Shot down by the Japanese.
Tom Ridge: Bronze Star for Valor in Vietnam.
Sam Johnson: Combat in Korea and Vietnam, POW in Hanoi.
Ted Stevens: WWII pilot, DFCs, two Air Medals.
John Warner: Served in the Navy during WWII as a RM3
Heather Wilson: Air Force 1978–1989
Gerald Ford: Navy, WWII
Pundits & Preachers
Sean Hannity: did not serve.
Rush Limbaugh: did not serve (4‑F with a “pilonidal cyst.”)
Bill O’Reilly: did not serve.
Michael Savage: did not serve.
George Will: did not serve.
Chris Matthews: did not serve.
Paul Gigot: did not serve.
Bill Bennett: did not serve.
Pat Buchanan: did not serve.
John Wayne: did not serve.
Bill Kristol: did not serve.
Kenneth Starr: did not serve.
Antonin Scalia: did not serve.
Clarence Thomas: did not serve.
Ralph Reed: did not serve.
Michael Medved: did not serve.
Charlie Daniels: did not serve.
Ted Nugent: did not serve.