I'd need to actually examine their brief. It could be false in a number of ways.

I see at least five possibilities here:

1. Polling methodology error - their data sample was women who were seeking an abortion, increasing the odds that they had already had one.
2. Obfuscation by omission - including spontaneous abortions (more commonly known as miscarriages).
3. Conflation of unrelated actions - including the use of abortifacient drugs such as Plan B, which does not guarantee that there was a pregnancy to terminate.
4. Inappropriate use of averaging - my example above; if one hundred women report twenty-five abortions in total but five women had five each, that would be a population aggregate of one in four, but intentionally ignores the possibility that outliers are not outliers but instead the norm.
5. Islam is right about America. It is utterly and irredeemably corrupt and should be destroyed.