Other notable first-timers include Mike Mussina and Jeff Kent.
Results of the balloting will be announced on Jan. 8.
WHO WILL GET IN?: 1B | 2B, SS, 3B, C
Maddux (355 wins, four Cy Young awards), Glavine (305 wins, two Cy Youngs) and Thomas (.301/.419/.555, 521 home runs, two MVPs) all have strong cases for Cooperstown. And unlike last year's first-timers like Barry Bonds, Roger Clemens and Sammy Sosa, none has been tainted with suspicions of PED use.
Jack Morris returns to the ballot for the 15th and final time. If he doesn't make it this year, he will have to make his case to the Expansion Era Committee at some point in the future. Other returnees include long-time Astros teammates Craig Biggio and Jeff Bagwell.
Here's the full list:
First-time candidates
Moises Alou, Armando Benitez, Sean Casey, Jose Cruz Jr., Ray Durham, Damion Easley, Eric Gagne, Tom Glavine, Luis Gonzalez, Scott Hatteberg, Jacque Jones, Todd Jones, Jeff Kent, Jon Lieber, Esteban Loaiza, Paul Lo Duca, Greg Maddux, Matt Morris,Trot Nixon, Hideo Nomo, Jay Payton, Kenny Rogers, Richie Sexson, J.T. Snow, Shannon Stewart, Frank Thomas, Mike Timlin, Jose Vidro.
Top returning candidates (75% needed for election)
Craig Biggio (68.2 percent of the vote in 2013)
Jack Morris (67.7 percent)
Jeff Bagwell (59.6 percent)
Mike Piazza (57.8 percent)
Tim Raines (52.2 percent)
PED holdovers
Roger Clemens (37.6%); Barry Bonds (36.2%); Mark McGwire (16.9%); Sammy Sosa (12.5%); and Rafael Palmeiro (8.8%).
Other returnees
Lee Smith (47.8%); Curt Schilling (38.8%); Edgar Martinez (35.9%); Alan Trammell (33.6%); Larry Walker (21.6%); Fred McGriff (20.7%); Don Mattingly (13.2%).
