Editor's Note: In the final 100 days before Election Day, CNN has been profiling one race at random each day from among the nation's top 100 House races, which we've dubbed "The CNN 100." Read the full list here . Today's featured district is:

Pennsylvania 15: Rep. Charlie Dent (R) defends his seat
Primary: May 18, 2010
Location: Allentown, Bethlehem
Days until the election: 34

This is one of the few races where Democrats are trying for a pick-up. Rep. Charlie Dent (R) is seeking his fourth term in a district that voted for Al Gore in 2000, John Kerry in 2004 and Barack Obama in 2008. It is a tough year for the Democrats to (to say the least) but this is one place where they hope to have a shot. Their candidate is local mayor John Callahan.

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