A new Susquehanna Polling and Research poll in Delaware shows Rep. Mike Castle (R-DE) soundly beating Attorney General Beau Biden (D) in a possible match up for U.S. Senate in 2010.
Castle leads Biden, 55% to 34% with only 8% undecided.
A few weeks ago, Castle said he was more likely to run for Senate than for re-election, but he is also considering retirement.