Stewart scored 17 goals in 101 U.S. appearances, including the second strike in the USA's historic 2-1 win over Colombia at the 1994 World Cup.
Agoos, who earned 134 U.S. caps, was MLS champion in 1996, 1997 and 1999 with D.C., and in 2001 and 2003 with San Jose.
Preki earned 28 U.S. caps. He played 10 seasons in MLS and was MVP in 1997 and 2003.
Voting by media, coaches, administrators and Hall of Fame members will run through Feb. 8. Players need 75 percent to be elected, and inductions will take place Aug. 22-24.
(x-first time eligible; y-last time eligible)
Raul Diaz Arce
Click HERE for bios of all the players.