Nice try at distorting the facts. By the same survey you chose to quote from, 73% of respondents feel that abortion should be illegal in some cases. This survey asked about abortion in the positive sense, so it is likely that the pro-abortion count reflected by it is exaggerated. Most neutrally oriented surveys show a slight plurality on pro-life side.
The country is very evenly split on this issue, regardless of how the pro-abortion crowd attempts to spin it.
Second, the comment he was making was that there had been an erosion in the Republican party that has increased the support for abortion. But this poll shows that for the last 26 years, the numbers have remained essentially steady - no big worrisome increase.