I'll answer this way:
DEMOCRATS:
-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. jg. 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, Paraplegic from war injuries. Served in Congress.
-Ted Kennedy: Army, 1951-53.
-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; 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. Member of Admiral Hyman Rickover's elite nuclear submarine program.
-Walter Mondale: Army 1951-1953
-John Glenn: Marine, WWII and Korea; six DFCs and Air Medal with 18 Clusters, astronaut.
-Tom Lantos: Served in Hungarian underground in WWII. Saved by Raoul Wallenberg.
REPUBLICANS:
-Dick Cheney: did not serve. Several deferments, the last by marriage.
-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.
-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 Max 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 flight instructor.
-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: Vietnam POW, Silver Star, Bronze Star, Legion of Merit, Purple Heart and Distinguished Flying Cross. Remember how the Republicans trashed him in the primaries in 2000?
-Dana Rohrabacher: did not serve.
-John M. McHugh: did not serve.
-JC Watts: did not serve.
-Jack Kemp: did not serve; "Knee problem," although continued in NFL for 8 years as quarterback. (Win one for the Gipper!!)
-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.
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. (He only shoots at things that don't shoot back.)