A new Susquehanna Polling & Research poll in Delaware finds Attorney General Beau Biden (D) leading Rep. Mike Castle (R) by five points, 45% to 40%.
In April, Castle led by 21 points.
According to the pollster, the shift "may be a result of negative
publicity [Castle] received in the state after casting a 'no' vote for
President Obama's health care reform bill in the U.S. Congress."