Three established Democrats are vying for their party's nomination for the office of lieutenant governor. While most Californians don't even know what a Lt. Governor does, the office can be a powerful stepping stone - three lieutenant governors have gone on to be elected California governor, seven others became California's top executive when the governor took another position or died. Two state senators, Jackie Speier of Hillsborough and Liz Figueroa of Fremont, are competing with Insurance Commissioner John Garamendi for the state's No 2 position. They join Patt for a debate.