Remap Shakes Up Lawmakers’ Futures : Redistricting: A new congressional district will be created. Other districts will be carved up and reconfigured. And some incumbents may be forced to move.

The state Supreme Court’s redrawn map of legislative and congressional districts would create a new congressional seat covering Diamond Bar and Pomona and has raised the possibility that veteran Republican Assemblymen Richard L. Mountjoy of Monrovia and William H. Lancaster of Covina would be forced to run against each other next year.

Release of the plan Monday immediately triggered an announcement from former Assemblyman Charles Bader (R-Pomona), who last year lost a bitter state Senate contest, that he would seek a political comeback and run for the new House seat.

Latino representation is expected to get a boost under the plan, which adds a third heavily Latino state Senate seat stretching from Alhambra to Azusa in the San Gabriel Valley.

Potential candidates in the new Senate district include two Latino Democratic Assembly members, Lucille Roybal-Allard of Los Angeles and Xavier Becerra of Monterey Park, whose homes would be in the same San Gabriel Valley Assembly district. The two could also choose to run for Assembly seats.

A third Latino legislator, Assembly Democrat Richard Polanco of Los Angeles, whose current residence also would be in the same Assembly district as those of Roybal-Allard and Becerra, says he plans to move to a residence in the new 45th Assembly District in the downtown Los Angeles area.

“It’s clear we’ll have to get together and do some talking,” Roybal-Allard said. The situation could be eased if one of them chose to run for the Senate or a new strongly Latino congressional district based in downtown Los Angeles.

State Sen. Charles M. Calderon (D-Whittier) said he would probably seek reelection from a seat that runs from Montebello to Norwalk, leaving the new San Gabriel Valley Senate district open.

The plan, released Monday, could also lead to Sen. Newton R. Russell (R-Glendale) running against Senate President Pro Tem David A. Roberti (D-Los Angeles) for a seat that would include Pasadena. Russell said he would campaign in the district, but Roberti isn’t sure where he’ll run.

“I’m running for reelection, but I’m still looking at the districts,” Roberti said.

At stake in the plan is control of the 80-member Assembly and 40-member Senate, both currently controlled by Democrats, and the 45-member congressional delegation, which is adding seven seats because of population growth. Democrats now hold a 26-19 edge in the state’s congressional delegation.

The release of the plan by a three-judge panel appointed by the high court triggered a scramble among politicians to figure out which new district they reside in and the impact of the plan. Overall, it was viewed as boosting the chances of Republicans to gain majorities in the Legislature, especially in the Assembly, and among the state’s congressional delegation.

Assemblyman Pat Nolan (R-Glendale) said that he believes the plan will eventually help the GOP take control of the Assembly. But he maintained “this shouldn’t be viewed as a Republican plan or a Democratic plan but as being of benefit to the voters because they’ll have more competition, more choice” among candidates because the districts will be more evenly balanced between registered Republicans and Democrats.

Though the release of the plan is a significant step, the redistricting process is far from finished. The high court said it does not expect to adopt the plan until the end of January, after hearing oral arguments Jan. 13.

Until then, it is possible for the Legislature and Gov. Pete Wilson to agree to a compromise plan, but that is unlikely. The failure of the governor and lawmakers to come up with a proposal led to the court taking over the once-a-decade redrawing of political boundaries.

The Legislature is required to redraw the lines to reflect population shifts reported in the 1990 Census, and the new districts will go into effect in 1992. The new Senate districts will have 744,000 people; Assembly districts 372,000, and congressional districts 572,000.

In the San Gabriel Valley area, the following is a breakdown of newly configured congressional seats:

* 27th Congressional District. Would cover Pasadena, Burbank and Glendale, the home of Republican Rep. Carlos J. Moorhead.

* 28th Congressional District. Would stretch through the northern Pomona and San Gabriel valleys, including Arcadia, Monrovia, San Dimas, Claremont, Covina, West Covina and part of Pomona. Rep. David Dreier (R-La Verne) said he would probably seek reelection from this district.

* 31st Congressional District. Would run from Alhambra and Monterey Park on the west through El Monte to Azusa on the east. The district would be 58.5% Latino and 22% Asian. Much of the area is now represented by Rep. Matthew G. Martinez (D-Monterey Park).

* 34th Congressional District. Would cover much of the area now represented by Rep. Esteban E. Torres (D-Pico Rivera). It would include Montebello, Pico Rivera, Norwalk, La Puente and part of Whittier. “On balance, it’s not a bad district,” Torres said. But he voiced disappointment that the plan failed to provide for more than one new Latino congressional district.

* 41st Congressional District. A new district that would cover Diamond Bar, part of Pomona and portions of San Bernardino County and Yorba Linda in Orange County. On Tuesday, Bader launched his campaign for the seat, saying it would incorporate his political base and is more than 50% Republican to boot.

When he ran for the Senate last year, Bader said he drew up what he regarded as an ideal political district for himself, and the new congressional district mirrors those boundaries. He has represented or campaigned in almost all of the area except for Rowland Heights, Brea and Yorba Linda.

Dreier said he expects other Republicans to also jump into the race, but Bader quickly lined up endorsements from Sen. Bill Leonard (R-Big Bear) and Assemblyman Jim Brulte (R-Ontario).

Highlights of the Senate plan include:

* 21st Senate District. Would cover Pasadena and includes the homes of Sens. Roberti and Russell.

* 24th Senate District. A heavily Latino area running from Alhambra east to Azusa. If Calderon runs for the Montebello-area Senate seat and Sen. Art Torres (D-Los Angeles) campaigns in the 22nd District in downtown Los Angeles, this race could attract a large field. Torres, whose district currently covers South Pasadena, finds most of his district in the new 22nd District.

* 29th Senate District. Would include the western Whittier home of Sen. Frank Hill as well as Diamond Bar, Hacienda Heights, parts of Pomona, Claremont, City of Industry, Walnut, West Covina, Glendora, San Dimas, La Verne and Monrovia. “If you’re a Republican, it’s a good district,” said Hill, whose current district stretches into Orange County.

* 32nd Senate District. Similar to the current 34th Senate District that is represented by Sen. Ruben S. Ayala (D-Chino). It would include part of Pomona and then stretch eastward into San Bernardino County. The new district would be just over 40% Latino and more than 55% in total minority population. But Ayala could face trouble there in the future because the district’s registration is evenly split between Democrats and Republicans.

Also, Leonard’s Senate district, which now covers the area from Azusa to Claremont, would be pushed out of Los Angeles County entirely under the remap plan.

In the Assembly, the plan creates the following districts:

* 44th Assembly District. Would cover Pasadena and La Canada Flintridge. Much of the territory is now represented by Nolan. But Nolan said he would expect to run in the neighboring 43rd District, which would include his Glendale home. Assemblywoman Barbara Friedman (D-Los Angeles) also resides in the proposed district.

* 49th Assembly District. Would cover Monterey Park, Alhambra, San Gabriel and Rosemead. Much of the area is represented by Becerra. Latinos would make up 44.2% of the registered voters and Asians would have a strong influence with more than 10% of the voters. The proposed district includes the homes of Becerra, Roybal-Allard and Polanco.

* 57th Assembly District. Would cover Azusa, El Monte, La Puente and Baldwin Park, the home of Democratic Assemblywoman Sally Tanner. Latinos would make up 40% of the registered voters.

* 59th Assembly District. Would include the homes of Lancaster and Mountjoy. Among the communities in the district would be Monrovia, San Dimas, Covina and Claremont, as well as part of Pomona. Mountjoy acknowledges that he and Lancaster, whom he describes as a friend, are in the same district, but he stopped short of saying he would seek reelection to the Assembly seat, though he said he plans to stay in the Legislature. He said it is too early to say whether he would run against Lancaster in a Republican primary next June. “We’ve got a long way to go yet,” he said, but “everybody has to do what they have to do.”

* 60th Assembly District. Would include La Mirada and part of Whittier as well as West Covina and Diamond Bar in the San Gabriel Valley. Much of it is now represented by Assemblyman Paul Horcher (R-Diamond Bar), who said he plans to run for the seat.