The number and variety of state policies regulating abortion each year is increasingly high. Conclusions drawn in the existing literature about the determinants of abortion policy are vulnerable to selection bias because they focus on a few types of policies at discrete moments in time. Using an original dataset comprised of a near universe of pro- and anti- abortion rights policy from 1973-2013, I establish the ways in which religious forces, public preferences, descriptive and partisan representation shape state policy.  I find that morality and representation variables are significant predictors of both types of policy, but female Democrats are only effective at blocking restrictive policy.  Additionally, I show the heterogeneous effect of representation across policies; Democratic control of the state legislature is significant for only some anti-abortion policies.