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Through the last 35 years, however, the support for legal abortion among the American public has not deteriorated. In 1973 after the Roe v. Wade decision, Louis Harris & Associates found 52 percent favored "the US Supreme Court decision making abortion up to three months of pregnancy legal" and 41 percent opposed it. Support and opposition has moved up and down marginally in Harris polling, dipping to 47 percent in favor and 44 percent opposed in 1974 and rising to 60 percent in favor and 37 percent opposed in 1979, before settling back down to 56 percent in favor/40 percent opposed in 2007--virtually the same as in 1973.
Other surveys lead to the same conclusion. Our firm has asked whether Americans agreed or disagreed that "it should be legal for a woman to have an abortion" four times since 1998--always finding six in ten agreeing (four in ten strongly) and a third disagreeing (a quarter strongly). See Table Two.
In another example, polling for ABC News and the Washington Post has shown virtually no change in the aggregate levels of support and opposition to abortion in the last 10 years among registered voters. In 1996, 24 percent of voters said they thought abortion should be legal in all cases and 34 percent legal in most cases, 25 percent illegal in most, and 14 percent illegal in all. In 2008, the ABC/Washington Post poll obtained virtually the same result: 21 percent legal in all cases, 36 percent legal in most, 25 percent illegal in most, and 15 percent illegal in all.