SAN FRANCISCO (Reuters) – A majority of Californians back Governor Jerry Brown's plan to ask them to extend tax increases to help close a $25.4 billion state budget gap, poll results released on Wednesday showed. Brown, a Democrat sworn in to a third term earlier this month as leader of America's most populous state, wants lawmakers to help him put a measure to voters in June that would propose extending tax increases that expire this year to raise money for California's cash-strapped government. Revenue from tax extensions, $12.5 billion in spending cuts and other moves would balance the state's books...