[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2008/images/03/26/art.cand.gi.jpg caption="A new poll suggests Sen. Obama would be a tougher candidate for John McCain to beat."]
(CNN)— A new poll finds a majority of Republicans and Democrats feel Sen. Barack Obama would be a tougher candidate against the presumptive Republican nominee John McCain in a potential fall match-up.
In a Gallup poll released Monday, 59 percent of Democratic voters believe Obama has the best chance at beating John McCain. Thirty percent said Clinton was more likely to win a matchup with the Arizona senator.
Republicans surveyed say Clinton would be the easiest to beat: 64 percent said Clinton would make a weaker fall opponent for McCain, while just 22 percent said Obama.
The survey of 1,005 adults conducted March 24-27 has a sampling error of 4 percent.
The discussion of which Democrat stands the strongest against John McCain has been an ongoing debate since the Republican race narrowed leaving the Arizona Senator as the Republican nominee in waiting.
A Gallup poll released last week suggested a majority of Democrats would cast a vote for John McCain this fall if the candidate they support does not win the Democratic nomination. This is particularly true of Clinton’s supporters, one third of whom said they will vote for McCain if Obama is the Democratic nominee.
–CNN’s Emily Sherman