The president's daughter Maureen Reagan endorsed an old friend in a nonpartisan primary Los Angeles city council election and has provoked the ire of an opponent. She endorsed the incumbent, Joy Picus, a registered Democrat, and angered challenger Jeanne Nemo, a Republican, who has demanded an apology from the Republican National Committee and is demanding the president's daughter be fired as his adviser on women's issues. The RNC is responding that it was a "nonpartisan" election and that Maureen is doing "an excellent job in partisan elections" . . .

Raoul Wallenberg, the Swedish diplomat who was credited with rescuing thousands of Hungarian Jews from the Nazis, will be honored in New York and Washington. New York Mayor Ed Koch yesterday dedicated part of First Avenue across from the United Nations in Wallenberg's name. The U.S. Holocaust Memorial Museum that will open on the Mall near the Washington Monument will have a special memorial to Wallenberg, whose story was part of an NBC two-part television drama that ended last night . . .

An odd luncheon trio was at Le Cirque, New York's fancy French restaurant: Jean MacArthur, the 86-year-old widow of Douglas MacArthur; Prince Albert of Monaco; and Doug Flutie, the multimillion-dollar quarterback who is seen everywhere lately. That would have been some conversation to listen in on . . .

The Overseas Writers, one of Washington's oldest press luncheon clubs, has elected a new president. John Walcott, diplomatic correspondent for Newsweek magazine, will replace Roy Gutman, national security correspondent for Newsday, as president for a two-year term. David Ignatius, Wall Street Journal State Department correspondent, will be vice president . . .

A preliminary panel of 16 jurors was selected yesterday in Rhode Island to serve at Claus von Bu low's retrial on charges he twice tried to kill his wife with insulin injections. The names of the 12 women and four men were drawn at random by Providence County Superior Court Judge Corinne P. Grande after she spent two days questioning members of the initial jury pool of 115 . . .