Beau Biden was officially welcomed home after a deployment in Iraq yesterday. As focus now turns to his political future, a Rasmussen survey shows that the Delaware attorney general can't count on an easy road to the U.S. Senate seat that his father once held.

General Election Matchup
Castle (R) 47
Biden (D) 42
Not Sure 6

At-large Rep. Mike Castle, the state's former governor, has held his cards close to the vest as Republicans encourage him to announce his plans for the future soon. CongressDaily's Erin McPike reported that Castle recently told potential donors to hold on to their money because he did not want to have to refund contributions should he decide to retire.

Should Castle not run, Biden should have a much easier road. He leads Christine O'Donnell, the Republican nominee in 2008 against then-Sen. Joe Biden, 49-40.

Favorable Ratings
Biden 60 / 32
Castle 61 / 34
O'Donnell 46 / 36