A new Mason-Dixon poll in Florida finds Rep. Patrick Murphy (D) leads Rep. Alan Grayson (D) in the Democratic primary for U.S. Senate, 23% to 14%, though 63% are still undecided.
In the GOP race, Bill McCollum (R) leads with 20%, followed by Rep. David Jolly (R) at 8%, Vern Buchanan (R) at 7% and Tom Rooney (R) at 5% and 48% undecided.

