Students of politics are again asking how institutional patterns affec
t political outcomes. This article contributes to that stream of inqui
ry by revisiting V. O. Key's argument that the have-nots of society fa
re worse in ''disorganized'' political systems because the lack of coh
esive political parties with clear constituency bases means that their
interests will not be represented effectively. The authors find Key's
argument confirmed in a comparison of tax reform in New York and Cali
fornia. The New York reforms, decided by cohesive, constituency-based
legislative parties, spread the tax burden more equitably than the Cal
ifornia ones, which were decided mainly through a series of disconnect
ed public referenda.