Party loyalty and legislative success - Are loyal majority party members more successful in the US House of Representatives?

Majority Party leaders are hypothesized, through their control of the legislative schedule in the House of Representatives, to use legislative success as a selective incentive to encourage majority party members to contribute to the collective goals of the party. Members can demonstrate party loyalty through floor voting and financial contributions to the party's re-election efforts. This article examines legislative success from the 103rd through 107th Congresses. The evidence shows that both demonstrations of party loyalty have a significant effect on legislative success.