http://www.ontheissues.org/Donald_Trump.htm
I have evolved on abortion issue, like Reagan evolved. (Aug 2015)
Ban late abortions; exceptions for rape, incest or health. (Jun 2015)
I am now pro-life; after years of being pro-choice. (Apr 2011)
I changed my views to pro-life based on personal stories. (Apr 2011)
I am pro-life; fight ObamaCare abortion funding. (Feb 2011)
Pro-choice, but ban partial birth abortion. (Jul 2000)
Favors abortion rights but respects opposition. (Dec 1999)
Describing himself as "pro-life," Trump told Bloomberg News in January that he believes abortion should be banned at some point in pregnancy, with exceptions for rape, incest or life of the mother. In 2011 he explained to the Christian Broadcasting Network that he had changed his mind on the issue. In "The America We Deserve," Trump then wrote that he supported a woman's right to choose.
Source: PBS News Hour "2016 Candidate Stands" series , Jun 16, 2015