In the change, the new 23rd lost many of the heavily Republican areas given to it in 2003, as well as the rest of Laredo. It received a large portion of south San Antonio, which was heavily Democratic. Four other districts were affected: the 28th (represented by Democrat Henry Cuellar), 25th (Democrat Lloyd Doggett), (Democrat Ruben Hinojosa) and (Republican Lamar S. Smith). As a result, on November 7, 2006 (the day of the general election), these five districts held open primaries, called a "jungle primary." If no candidate were to receive as much as 50% of the vote, a runoff election in December would decide the seat.