NATIONAL ELECTION RETURNS : EDITION-TIME COMPILATIONS : State-by-State Election Reports of Key Races and Issues : Maryland

BALTIMORE —  Democratic Rep. Barbara Mikulski, granddaughter of a Polish immigrant baker, won an easy victory over former White House aide Linda Chavez in only the second all-woman U.S. Senate race in history.

In the governor’s race, William Schaefer, Baltimore’s sometimes moody but popular Democratic mayor, walloped underdog Thomas Mooney and appeared headed for victory by the largest margin of any gubernatorial candidate in Maryland history.

Mikulski trounced Chavez in the population centers of Baltimore and the Washington, D.C., suburbs to become the first woman Democrat elected to the Senate. She will succeed retiring Republican Sen. Charles McC. Mathias.

Mikulski was ahead 57% to 43% for Chavez, the controversial former head of the Civil Rights Commission and a one-time aide to President Reagan, whose visit to Maryland failed to boost her campaign.

Mikulski was helped by the Democrats’ 3-1 edge in statewide voter registration.

The campaign was highlighted by Chavez’s attacks on Mikulski’s record and political philosophy, including a demand that Mikulski retract a 1981 statement supporting the Marxist-feminist policies of a former aide.

In House races, one-term Republican Rep. Helen Bentley defeated Democratic challenger Kathleen Kennedy Townsend, daughter of the late Sen. Robert F. Kennedy, in the 2nd District.