The findings come from a new poll conducted and released by Fox News.
"By a 51-34 percent margin, voters think Obama is 'being too soft' rather than 'striking the right balance' in talks with Iran," reports Fox.
"Democrats think Obama is striking the right balance by a 27-point margin. Republicans (by 69 points) and independents (by 17 points) say he is being too soft.
"Almost no one thinks Obama is “being too tough” with Iran (two percent)."
Half of American voters "don't think the deal will work" and disapprove of the president's job on Iran.
"Voters don’t think the deal will work. Half say negotiating is the wrong thing to do because Iran can’t be trusted to honor any agreement (50 percent), while 40 percent think negotiating is the right thing to do because it’s the best way to prevent a nuclear Iran.
"Just 32 percent of voters approve of the job Obama’s doing on Iran, while 57 percent disapprove. Last month (the previous low) was 33-58 percent."