This research centers on the effects of gender parity on elections to the French National Assembly elections in 2012, with particular attention to the party differential in the success rate of female candidates. Clearly parity laws have increased the number of successful female candidates since its inception, but that this effect has been muted within one major party, the UMP, the Union for a Presidential Majority. In contrast to the Socialist Party or other minor parties, female UMP candidates fared much worse than their male counterparts, especially among their incumbent party members.