Seven in 10 Americans believe Roe v. Wade should stand, according to new data from a Wall Street Journal/NBC News poll, as the landmark Supreme Court abortion-rights ruling turns 40 on Tuesday.

That is the highest level of support for the decision, which established a woman's right to an abortion, since polls began tracking it in 1989. The shift is mostly the result of more Democrats backing the decision—particularly Hispanics and African-Americans—and a slight uptick in support from Republicans.

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