Whatever else you might think about Mike Pence, he comes by his anti-abortion extremism honestly. He is, by far, the most uncompromising opponent of abortion among the GOP presidential candidates. Given that both the right and left wings of the GOP hate him for his behavior as VP, it is the only reason to vote for him.
The NYT poll indicates that he has 3 percent of the vote. I have argued consistently that genuinely pro-life voters represent a tiny minority of the GOP electorate. This proves me right.