Sen. Hillary Rodham Clinton's trio of victories over Sen. Barack Obama last week appears to have convinced a sizable number of uncommitted Democratic superdelegates to wait until the end of the primaries and caucuses before picking a candidate, according to a survey by The Washington Post.

Many of the 80 uncommitted superdelegates who were contacted over the past several days said they are reluctant to override the clear will of voters. But if Clinton (N.Y.) and Obama (Ill.) are still seen as relatively close in the pledged, or elected, delegate count in June, many said, they will feel free to decide for themselves which of the candidates would make a stronger nominee to run against Sen. John McCain (R-Ariz.) in the fall.