TALLAHASSEE - Name recognition may be the deciding factor in races for two of Florida's three vacant congressional districts, where the offspring of well-known politicians will be on the Sept. 5 primary ballot. State Rep. Gus Bilirakis is trying to keep his father's 9th District seat in the family. U.S. Rep. Mike Bilirakis is retiring after 24 years in Congress. Both are Palm Harbor Republicans. Hillsborough County Commissioner Kathy Castor, the daughter of former Florida Education Commissioner and 2004 U.S. Senate candidate Betty Castor, is a Democratic candidate for the 11th District seat being vacated by Rep. Jim Davis, D-Tampa. Davis is running for governor. The younger Bilirakis and Castor, both lawyers, are favored to win their respective party primaries.