Race Shaping Up for Robbins’ Seat : Politics: Weintraub says she’ll run. Assemblymen Katz and Friedman are also among those mentioned for special election to fill out term ending in 1994.

As the stunning news of state Sen. Alan Robbins’ resignation sped through political circles Tuesday, San Fernando Valley politicians began calculating the odds of capturing his seat in what could be a furiously contested special election in March.

The seat’s sudden availability prompted Los Angeles school board member Roberta Weintraub to declare that she will run and led political insiders to speculate about several other potential contenders, including state Assemblymen Terry B. Friedman of Los Angeles and Richard Katz of Sylmar.

As part of his plea bargain with federal prosecutors, Robbins agreed to resign immediately from his 20th Senate District seat, which encompasses a heavily Democratic section of the East Valley. Gov. Pete Wilson must set a date within two weeks for a special election, which would be held no later than March 31.

Other names mentioned as possible candidates included Richard Alarcon, Mayor Tom Bradley’s Valley liaison, and Clifford Berg, a state Senate staffer and former Valley resident closely allied with Senate President Pro Tem David A. Roberti (D-Los Angeles).

All potential candidates so far are Democrats in a district with 144,000 Democrats and 84,000 Republicans.

After he was first elected to the Senate in 1973, Robbins, with his high profile and massive campaign fund, scared off all but token candidates. He easily won reelection last year, defeating a Republican candidate by almost 2 to 1.

Styling himself as “the Valley’s senator,” the only one with an all-Valley district, Robbins vigorously advocated local causes ranging from the San Fernando Valley Fair to a planned Metro Rail extension, which he forced to be laid out as a subway through residential neighborhoods.

Weintraub, who has served on the school board for more than 12 years, last year changed her voter registration to Democratic, a move that many observers viewed as an attempt to position herself for a run for Robbins’ seat.

She said Tuesday that she plans to seek the seat, although she will have to move into the district from her home in nearby Sherman Oaks.

“I think there’s every reason in the world for me to run,” she said. “I feel funny to be talking about it, considering I’ve known Alan for such a long period of time.”

Friedman, a liberal Democrat who chairs the Assembly Labor Committee, said he was seriously considering running and would make up his mind in the next few days.

Katz, Berg and Alarcon could not be reached for comment.

Melissa Warren, a spokesman for the secretary of state’s office, said the winner of the special election will serve the remainder of Robbins’ term, which ends in 1994. Under new term limits imposed by voters last year, the senator-elect would be eligible for only one additional four-year term.

As potential candidates figured their chances for capturing the seat, one major wild card was the outcome of California’s decennial redrawing of political district boundaries.

Three court-appointed special masters are in the process of reapportioning the state’s congressional and legislative districts, but the plan is not expected to be completed until January. Whoever succeeds Robbins could be running for reelection in a substantially different district in 1994. Political observers said the outcome of the special election could be influenced by how much support the candidates receive from Roberti, the Senate leader, and Democrats Howard Berman and Henry Waxman, congressmen who head the well-financed political organization based on Los Angeles’ Westside.

Though all three are liberal Democrats, Roberti and the Waxman-Berman organization have fielded opposing candidates in the past. Friedman is close to Berman and Waxman, while Berg could be expected to receive financial and other assistance from Roberti.