There has been a recent (at least, in the news) fight on the left over abortion and if you have to be pro-choice to be part of the Democratic party. One side says you absolutely have to be, the other says that anti-abortion voices have to be included in order to win House seats and state legislations in Conservative states/districts, in order to then push pro-choice positions.
I find both sides have compelling arguments, unfortunately. I guess it’s the old “does the end justify the means” argument.
There’s more sides than just that. For example, there’s anti-abortion leftists whose goal is to reduce the number of abortions, which they see as completely unrelated to the availability of abortions. To this group, Obama provided a clear leadership example–he did not do anything (that I know of) to reduce the availability of abortions, but his policies successfully reduced the number of abortions to levels lower than they were before Roe v Wade. To your standard “I want to throw doctors and women in jail” anti-abortion type, Obama was as bad as any other recent Democratic president. To your “I just want to stop abortions” anti-abortion type, Obama is a hero/saint/example to us all.
Admittedly this anti-abortion faction is a small group without easy access to bumper sticker technology.