Hours after defeating Arlen Specter for the Democratic nomination for the U.S. Senate, Rep. Joe Sestak hit the campaign trail this morning in pursuit of the seat Specter occupied for 30 years.

His Republican opponent, Pat Toomey, also wasted no time and made his way to Philadelphia from his Lehigh Valley home to launch his own run for a seat that had been on the GOP side of the aisle until Specter switched parties last year.

Wearing a leather bomber jacket, Sestak, 58, started his day shaking hands of commuters at Philadelphia's Market Street East station before 6 a.m.

The former Navy admiral then headed to an independent TV studio in center City for a round of network interviews.

Sestak later boarded a train to Washington for a vote in the House of Representatives.

Toomey also was in Philadelphia for a round of television appearances.

In an appearance on the CBS3/CW, Toomey, 48, a former Congressman, called Sestak a friend and said he looked forward to a series of serious debates.

He said he and Sestak have starkly different views of government and that voters will have no problem telling them apart.

Read this morning's Inquirer story about Tuesday's primary at http://bit.ly/csolDJ