By Jim Melwert

NORRISTOWN, Pa. (CBS) — There are a handful of Congressional races in the Philadelphia suburbs on Tuesday.

The congressional balance in the region seems likely to hold, with one possible exception: The 8th congressional district in Bucks County and parts of Montgomery County. Republican Mike Fitzpatrick is not running for re-election, but his brother, former FBI agent Brian Fitzpatrick, is seeking the seat. He’s up against Democratic State Representative Steve Santisiero.

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In the 6th district with parts of Chester and Montgomery Counties, Republican Ryan Costello is seeking a second term, up against Democrat Mike Parrish.

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Republican Pat Meehan is seeking a fourth term in a rematch against Democrat Mary Ellen Balchunis in the 7th district in Delaware County. Meehan topped Balchunis by 24 points in 2014.

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Other congressional races: In the 1st district in Philadelphia, Bob Brady looks for a 10th term against Republican Debbie Williams. State Rep Dwight Evans faces Republican businessman James Jones in the 2nd district; Chaka Fattah’s former seat. And in Northeast Philly, the 13th District, Brendan Boyle is unopposed as he seeks a second term.