HARARE, Zimbabwe – President Mugabe branded opposition supporters “traitors” and warned yesterday that an election victory by the top rival party would not be tolerated, raising fears of violence two days before Zimbabweans choose a new parliament.

Mr. Mugabe’s comments, which were broadcast repeatedly on state radio, followed Roman Catholic Archbishop Pius Ncube’s call on Sunday for a “nonviolent mass popular uprising” if the ruling party wins tomorrow’s parliamentary election by fraud.

Similar comments by the president in the past have encouraged the ruling party and its youth militia to take violent action against candidates from the Movement for Democratic Change and its supporters.

“All those who will vote for the MDC are traitors,” Mr. Mugabe said Monday at a rally for the ruling Zimbabwe African National Union-Patriotic Front in Mutoko, 90 miles northeast of Harare.

In a separate speech yesterday, he also rejected the possibility of sharing government with the opposition, saying an MDC win would “not be tolerated.” He spoke to about 15,000 party supporters at a rally in Bindura, 55 miles north of Harare.

MDC leader Morgan Tsvangirai, who narrowly lost presidential polls in 2002, did not respond to Mugabe’s comments during speeches yesterday at two rallies in his home region of Bindura, 125 miles south of the capital.

But he blasted Mr.Mugabe’s policies, which he said had driven Zimbabwe’s once thriving economy into the ground.

“Zimbabwe has been destroyed, farms have been destroyed, industry has been destroyed, and education has been destroyed. Even relations with other countries have been destroyed,” Mr. Tsvangirai said, calling on all parties to work together to rebuild the country.

Yesterday was expected to be the last day of campaigning, but electoral officials said additional rallies would be permitted today.

Mr. Tsvangirai arrived late at his first appearance yesterday and police cut his address short, informing him that his party had only requested permission to gather until 12:30 p.m. All political gatherings require police authorization under Zimbabwe’s draconian security laws.

Mr. Ncube, one of Zimbabwe’s most outspoken church leaders, said Mr. Mugabe’s “traitor” comments revived ominous memories of moves against suspected opposition voters after previous elections.

“It may be quiet now, but we are not sure what will happen after these elections,” Mr. Ncube said in a telephone interview from Zimbabwe’s second largest city, Bulawayo. “You are dealing with people who bullied everyone into silence in the past.”

Mr. Ncube said he has been followed and all his telephones are tapped.

In 1985, tens of thousands of black families were evicted from their homes into midwinter cold until they could produce ruling party cards. That year, Mr. Mugabe told victorious supporters: “Now take your sticks and beat out the snakes among you.”