As with homosexual marriage, the public also doesn't support abortion.

Despite 35 years of judicially imposed abortion-on-debate on all 50 states, the tide hasn't turned in favor of abortion. Instead the general public is consistently opposed to abortion in most circumstances. And for the first time more Americans identify themselves as pro-life than pro-choice.

According to Gallup,

A new Gallup Poll, conducted May 7-10, finds 51% of Americans calling themselves "pro-life" on the issue of abortion and 42% "pro-choice." This is the first time a majority of U.S. adults have identified themselves as pro-life since Gallup began asking this question in 1995.

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The new results, obtained from Gallup's annual Values and Beliefs survey, represent a significant shift from a year ago, when 50% were pro-choice and 44% pro-life. Prior to now, the highest percentage identifying as pro-life was 46%, in both August 2001 and May 2002.

Additionally, people would allow abortions in only limited circumstances, not the unlimited circumstances which the Supreme Court has mandated. If those who oppose abortion in all circumstances, 23%, is combined with those who would allow in very limited circumstances, 37%, there's a strong 60% majority.

The May 2009 survey documents comparable changes in public views about the legality of abortion. In answer to a question providing three options for the extent to which abortion should be legal, about as many Americans now say the procedure should be illegal in all circumstances (23%) as say it should be legal under any circumstances (22%). This contrasts with the last four years, when Gallup found a strong tilt of public attitudes in favor of unrestricted abortion.

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Gallup also found public preferences for the extreme views on abortion about even -- as they are today -- in 2005 and 2002, as well as during much of the first decade of polling on this question from 1975 to 1985. Still, the dominant position on this question remains the middle option, as it has continuously since 1975: 53% currently say abortion should be legal only under certain circumstances.

When the views of this middle group are probed further -- asking these respondents whether they believe abortion should be legal in most or only a few circumstances -- Gallup finds the following breakdown in opinion.

Americans' recent shift toward the pro-life position is confirmed in two other surveys. The same three abortion questions asked on the Gallup Values and Beliefs survey were included in Gallup Poll Daily tracking from May 12-13, with nearly identical results, including a 50% to 43% pro-life versus pro-choice split on the self-identification question.

President Obama and his strong abortion stance may ironically be helping the pro-life movement.