The Kemper Open golf tournament will be played at Bethesda's Congressional Country Club for at least two more years following this year's tournament, Donald A. Hurst, vice president of the club, said yesterday.

Hurst said members had voted in a secret ballot to extend the club's contract with Kemper through 1985, with an option to extend beyond that. He declined to discuss numbers, saying only that the vote was not close, but neither was it overwhelmingly in favor of extending the contract.

"We had a substantial number of the members voting, and a majority of them approved it," said Hurst. He said other options on the ballot were to drop the tournament after this year or to extend it for two more years with no option to extend beyond then.

"We will enter into a contract with the Kemper companies. There will be somewhat of an adjustment as far as the base fee is concerned, but the basic format of the tournament will be the same," Hurst said.

Since it moved to Congressional from Quail Hollow Country Club in Charlotte, N.C., in 1980, Kemper has guaranteed the club a profit of $250,000 per year on the tournament.

Hurst said the members will be polled in 1985 to see if they want a further extension of the agreement with Kemper.

Robert H. Miller, the general chairman of this year's tournament, said he deliberately took a low-key approach to the voting and did not try to influence anyone.

"In my experience as general chairman, I have not received one serious complaint from a member, a tournament official or a player," said Miller. "Of course, there would be some people who do not like all the excitement of a major tournament."

Miller said he does not yet know the complete field for this year's tournament, which will run from May 30 to June 5, but Craig Stadler, who has won the tournament the past two years, will play. "I'm sure we'll have a good percentage of the top 20 money winners," Miller said.