Senator Bob Casey's re-election campaign has launched a new television ad — this one a negative attack, asking whether challenger Tom Smith "is your cup of tea?"

The ad relies on news clips of Smith himself speaking of his involvement with the Tea Party and his founding of the Armstrong County Patriots' group.

It follows a positive Casey ad released earlier this month featuring a Harley Davidson motorcycle rider throwing his support behind Casey, despite the fact (as we learn at the end of the ad) that Casey doesn't ride.