As you all know, the overall horserace in this poll (June 7-9, 788 RV, +-3%)
Bush 46, Kerry 45, Nader 6
Here are the veep trial heats they did:
Kerry/Edwards 47, Bush/Cheney 44, Nader 6
Bush/Cheney 47, Kerry/Gephardt 45, Nader 6
Bush/Cheney 47, Kerry/Clark 43, Nader 6
Bush/Cheney 47, Kerry/Vilsack 43, Nader 7
36% of the poll respondents stated that they'd like to see Edwards as the veep choice (43% of democrats).
Don't think hypothetical veep polling means much, but Edwards does seem to have a good amount of support out there.