President's approval rating plummets to 38 per cent overall, just 34 per cent on health care and 40 per cent on Iran
Obama's support among young voters has disappeared, with 49 per cent now saying they disapprove of his job performance
Hispanics' historic preference for the president shows signs of evaporating, with 43 per cent opposing him
52 per cent of the voting public now says Obama is not 'honest and trustworthy' and 51 per cent say he lacks 'strong leadership qualities'
Americans who want Republicans to control both houses of Congress now outnumber those who fear one-party control
