A new poll on the 2010 governor’s race shows that state Attorney General Jerry Brown is leading San Francisco Mayor Gavin Newsom and Los Angeles Mayor Antonio Villaraigosa for the Democratic nomination. The Probolsky Research/Capitol Weekly Poll showed Brown had 24 percent compared to Newsom’s 16 percent and Villaraigosa’s 15 percent. But it’ll be interesting to see if the latest controversy surrounding Brown will affect his poll numbers. The Sacramento Bee is reporting that Brown accepted nearly $50,000 in campaign contributions from the family members of powerhouse lobbyist Darius Anderson, whose company the state Attorney General’s Office is now investigating. The Bee also reports that Republican gubernatorial candidate Steve Poizner is already calling on Brown to return the donations, saying that the attorney general is engaging in “unethical conduct,” by keeping contributions that came from the family of a man his office is investigating. However, a spokesperson for Brown, who has decried the effects of campaign contributions on politics in the past, told the Bee that the attorney general has no plans to return the money.