He hasn't announced it yet, but look for Ed Garvey, the Wisconsin deputy attorney general, to declare his bid sometime this summer for the Senate seat held by Wisconsin Republican Robert W. Kasten Jr. And as former executive director of the NFL Players Association (he negotiated for the association during the 1982 players' strike) Garvey has quite a few sportsmen to help him out.

When friends of Ed Garvey throw a fundraiser Tuesday for the potential Democratic candidate at the Capitol Hill Hyatt Regency, a contingent of athletic types is expected, including Redskins Mark Murphy and John Riggins, NFL Players Association executive director Gene Upshaw and Washington Bullet Tom McMillen. Also expected is former Iowa Democratic senator John Culver.

The fundraiser is part of a national athletic-political connection. According to Vic Kamber, who is handling Tuesday's reception for Garvey, "10 cities have been agreed to where key players are prepared to do events with or for Ed." Some of those key people, Kamber said, include Kansas City Chiefs player and president of the NFL Players Association Tom Condon and retired Miami Dolphins wide receiver Jimmy Cefalo. "But the campaign will not just be focused on football people."

Garvey "is officially exploring the possibility" of a Senate run in 1986 and has "not yet made his announcement, but expect him to do that sometime this summer, probably," said Kamber.