The latest Berkeley IGS Poll finds that for the second time in four months more of the state’s registered voters disapprove than approve of Dianne Feinstein’s job performance as U.S. Senator. In a statewide poll completed last week 46% of voters said they disapproved of the job Feinstein was doing, while just 35% approve. Another 19% have no opinion. The poll’s late January measure showed similar results.