http://www.maristpoll.marist.edu/nycpolls/AM050427.htmDon't know what caused this major turnaround for Bloomberg and Marist doesn't give enough details on the sample to see whether it's bad, but all said Bloomberg has certainly improved his position compared to last month:
Against the major Democrat candidates:
Bloomberg 51%, Freddy Ferrer 38%
Bloomberg 47%, Virginia Fields 41%
Bloomberg 48%, Anthony Weiner 36%
Bloomberg 50%, Gifford Miller 36%
Deserves Re-election: 47%
Time to Elect Someone Else: 48%
Approval rating (Zogby-style): 48% (Excellent/Good), 51% (Fair/Poor)