Vice President Joseph Biden will campaign April 15 for House candidate John Callahan (D), the mayor of Bethlehem.

A native of northeastern Pennsylvania, Biden placed a well-publicized phone call last year to recruit Callahan to run against Rep. Charlie Dent (R).

Callahan had turned down overtures to run in previous cycles, but he eventually decided to get into the race in the competitive district and now is considered to be one of the Democratic Congressional Campaign Committee’s top challengers.