TY - JOUR T1 - When Do Movements Matter? The Politics of Contingency and the Equal Rights Amendment AU - Soule, Sarah A. AU - Olzak, Susan PY - 2004 DO - 10.1177/000312240406900401 SP - 473 EP - 497 JO - American Sociological Review VL - 69 IS - 4 SN - 0003-1224 ER -