This is a new CBS News Poll -- taken between March 21st and 24th of a random national sample of 1,023 adults. The margin of error for both Republicans and Democrats is 6 points.
It's a different kind of poll, because it doesn't ask who the respondent currently supports for the presidential nomination of their party. Instead, it asks if the respondent could consider voting for each of the candidates. The charts show the percentage of respondents saying "yes", and compares that to this same kind of poll by CBS in February.
NOTE -- It should not be assumed that those not saying "yes" were saying "no". Only one candidate had a truly significant number of "no's" -- Christie with 42%. No other GOP candidate got over 27%, and no Democrat got over 26%. This just means those with less percentage of "yes's" have more work to do to get their party's nomination.
Here are the "no's" registered for each candidate:
Clinton..........10%
Biden..........26%
Warren..........16%
Sanders..........18%
O'Malley..........15%
Webb..........12%
Bush..........27%
Huckabee..........25%
Paul..........23%
Rubio..........14%
Cruz..........22%
Walker..........8%
Santorum..........26%
Perry..........26%
Carson..........15%
Christie..........42%
Jindal..........17%