The arrests of a prominent Wall Street hedge fund founder and five others on Friday have unsettled the hedge fund world and could spur calls for new rules governing the largely unregulated financial sector.

Arlen Specter, running for a historic fifth term to represent Pennsylvania in the Senate, has racked up a series of somewhat lukewarm endorsements from the state's major newspapers.

In a heated, and at times personal, series of exchanges, four-term Senator Arlen Specter and challenger U.S. Rep. Joe Hoeffel took aim at one another's records on Saturday in the first of two televised debates.