That could cement critical Republican support for Gov. Andrew Cuomo's statewide casino proposal.

WSJ: APNewsBreak: Long Island casino in play in NY

The strong support for Clark compared with 13 percent support for former Vermont Gov. Howard Dean and 11 percent for both Massachusetts Sen.

CNN: Poll: Bush down, Clark up

Generation Dean and Reclaim America are still attempting to generate support for former Vermont Gov. Howard Dean, and some supporters of Sen.

CNN: In primary's wake, Missouri students adjust