Respondents were asked, "What is your opinion on the availability of abortion?" and given the response options: "By law, abortion should never be permitted"; "The law should permit abortion only in case of rape, incest or when the womans life is in danger"; "The law should permit abortion for reasons other than rape, incest, or danger to the woman's life, but only after the need for the abortion has been clearly established"; and "By law, a woman should always be able to obtain an abortion as a matter of personal choice."
Measurement of Party ID for this figure is based on two questions. First, respondents were asked whether they consider themselves to be a Democrats, Republicans, independents, other, or not sure. Those who responded that they are independents or "other" were then asked if they lean toward either the Democrats or Republicans. If they indicated that they lean toward one party or the other, they are considered Democrats or Republicans for the purposes of this gure. Only "pure" independents or members of a third party who indicate that they have no preference for Democrats vis-a-vis Republicans are considered independents. Respondents who answered that they are "not sure" for either of the two aforementioned questions are not incorporated into this figure.