This thesis challenges the conventional wisdom that the W.S.P.U.'s strategy choices were unimportant in regard to winning women's suffrage. It confirms the hypothesis that the long-range strategy of the W.S.P.U. was to escalate coercion until the Government exhausted its powers of opposition and conceded, but to interrupt this strategy whenever favorable bargaining opportunities with the Government and third parties developed. In addition to filling an apparent research gap by systematically analyzing these choices, this thesis synthesizes and tests several piecemeal theories of social movements within the general framework of the natural history approach. The analysis utilizes data drawn from movement leaders' autobiographies, documentary accounts of the militant movement, and the standard histories of the entire British women's suffrage movement. Additionally, extensive use is made of contemporary periodicals and miscellaneous works on related movements.