A Gallup survey finds that 41% of Americans identify as "pro-choice." That's one point below the previous low in 2009. Those who say they are "pro-life" is at 50%, just one point below the previous high, also in 2009.
72% of Republicans and 47% of Democrats say they are "pro-life," while 22% of Republicans and 34% of Democrats say they are "pro-choice."
Since 2009, Americans have been closely divided in their identification with the labels most commonly used by each side of the abortion debate, although twice in that time period, including today, the percentage identifying as pro-life has been significantly higher than the pro-choice percentage. This represents a clear shift from 2001 to 2008, when Gallup most often found pro-choice adherents in the plurality.