From the Marist poll:
T
he Marist poll conducted in February 2019 shows that respondents are split evenly on the question of whether abortion should be legal, but the most surprising part of the poll is that a third of Democrats, 34 percent, identify as pro-life. Further, 15 percent of Democrats said that abortion should never be allowed under any circumstances and a total of 35 percent said that it should only be allowed in cases of rape or incest or to save the life of the mother.
Sixty-one percent of Democrats identified as pro-choice, but a majority favored restrictions on abortion. Only 22 percent said that abortion should be available at any time while 13 percent said it should be legal within the first six months of the pregnancy.
First they destroyed their own poll by lumping cases of rape and incest in with "to save the life of the mother.' Before Roe v Wade every state to include Texas had statutes protecting the life of the mother to be.
Given the poll results, only 15% of Democrat voters would support the following:
Premise #1: It is wrong to intentionally kill innocent human beings.
Premise #2: Abortion intentionally kills innocent human beings.
Conclusion: Therefore, abortion is morally wrong.
The poll reveals "61% of Democrats identified as pro-choice, but the majority favored restrictions on abortion." That means the majority of pro-choice Democrats believe, according to the syllogism above that there should be restrictions on the intentional killing of an innocent human being.
The article provided (
Poll: More Democrats Are Pro-Life - The Resurgent) also cautions the following:
There are some cautions about the poll, however. First, the poll showed a 14-point jump in the share of pro-life Democrats in a one-month span. Any sudden large shift in poll numbers should be regarded with skepticism. Additionally, the poll’s sample size of 1,008 adults is too small to make its findings conclusive. Subsequent polling will need to verify the shift in Democratic attitudes before I am convinced.
So we either have an outlier of those who claim to be Pro-Life, or more Democrats have defined Pro-Life to mean exceptions acceptable other than "life of the mother to be" which has been a Pro-Life position well before Roe v Wade.