PORT-AU-PRINCE, HAITI, NOV. 27 -- With only two days to go to national elections, the Haitian armed forces remain divided over whether to support them, diplomats here said today.

In a sign of varying attitudes among troops in different areas, the Army enforced a troubled calm in the capital, but may have carried out three new political killings in the countryside, witnesses said.

Maj. Gen. Williams Regala, one of three members of the National Government Council, tonight told Agence France-Presse, "We accept the responsibility of guaranteeing order during the elections." It was the first public statement by a top Army officer pledging to provide security at polling places during the vote Sunday for president and a bicameral legislature in Haiti's first free election.

No deaths were reported in Port-au-Prince last night or today, after five days of violence that left at least 19 dead and scores wounded. With the Army on maximum alert and troops patrolling with automatic rifles, the streets were deserted last night.

But in the rural town of Borel, in central Artibonite province, uniformed gunmen driving a jeep opened fire late yesterday on the home of Victor Benoit, a left-of-center candidate for the Senate.

Three bystanders, including a secondary school student, were shot to death and at least 12 people were detained, witnesses reported by phone to the capital today.

Benoit said in a radio broadcast that the gunmen raided his home and beat up several of his followers, among them another local legislative candidate. Benoit said he fled across a nearby river on a banana tree raft as the assailants set fire to a residence near his.

Two presidential candidates and three electoral council workers were slain during the past five months. Benoit was a leader of an eight-week-long movement last summer that protested an attempt by the government council, led by Gen. Henri Namphy, to seize control of the balloting from the independent electoral council.

Today, the electoral council issued another plea to the armed forces, also headed by Namphy, to protect polling places on election day. More than 2.3 million Haitians, or about 76 percent of the electorate, are expected to vote.

{In Washington, State Department spokesman Charles Redman said, "We urge the electoral authorities to supervise the voting in an orderly and free manner, the government to ensure an environment of security and confidence and the voting public to express their preferences and then to respect the outcome."}

Dozens of international observers have begun pouring into Haiti. An official U.S. delegation, including Delegate Walter E. Fauntroy (D-D.C.), is expected to arrive Saturday. The United States, France and Canada have provided substantial elections aid.

Even so, the armed forces appeared at this late date to approach the election reluctantly, having reached no internal agreement to support the vote which Haitians have awaited through 29 years of Duvalier dictatorship and a 22-month transition.

The Haitian Army, which has grown from 6,500 to 19,000 in 18 months, historically has not had a political role. But many top officers were recruited and trained under the dictator Francois (Papa Doc) Duvalier and his son, Jean-Claude. A number of these officers benefited financially from their loyalty to the dictatorship.

When the Duvalier paramilitary force, known as Ton-Tons Macoutes, was disbanded Feb. 7, 1986, with the departure of Jean-Claude Duvalier, some garrison commanders enlisted its members into their units.

These officers, who still dominate the Army's field command, "never believed that Namphy would go all the way to the bitter end with the elections," the diplomat said.

Namphy is described by diplomats here as being aware of the enormous international pressure favoring the election. But his backing within the armed forces is believed to come mainly from younger, lower-ranking officers, a western military observer said.

The Army has long regarded civilian politicians with "distrust and contempt," one high-ranking European diplomat noted. This week, the government council's almost complete public silence about the elections amid a series of closed meetings by top armed forces commanders led to rumors that Namphy would dissolve the electoral council and suspend the vote.

But a U.S. official said, "To the best of our knowledge there is no basis in fact to the . . . rumors." The United States provided $1.5 million in military aid to Haiti this year.