George Mische, executive director of a draft-Kennedy organization called Minnesotans for a Democratic Alternative, said today that if Sen. Edward M. Kennedy (D-Mass.) dosen't run for president in 1980, Mische's organization would "certainly" regard Vice President Mondale as an alternative to President Carter.

"We're totally dissatisfied with Carter," Mische said. "But we think Fritz Mondale is terrific. Unfortunately he's vice president. He's trapped. But Mondale would be very acceptable."

Mische, a Democratic alderman in St. Cloud, Minn., announced a 36-member steering committee for the group, which is chaired by Rep. Richard Nolan (D-Minn.), leader of a dump-Carter movement in the House. Mische said some members of the Democratic-Farmer-Labor Party's state central committee were defecting from Carter.

Nolan is scheduled to keynote a rally Sunday on the University of Minnesota's Minneapolis campus. Anti-Carter "observers" from 19 states and the District of Columbia are expected, Mische said.

In Washington, Rep. Edward P. Beard (D.R.I.), who will take part Sunday, said he expected to talk about the "positive" reasons why Kennedy should seek the Democratic nomination. Beard said he had no second choice and expressed doubt that it was realistic to talk about a Mondale candidacy.