Yes but - Pro choice advocates are not.  So why complain about the supposed free speech infringement.  I don't have a problem with pro-lifers joining the democrats but don't expect that this party will support that stand with you.  If that is your big issue, you need to join the other party.  

I believe abortion is immoral and that it is right the church teaches women sin if they abort.  I don't believe this sin is greater than adultery or murder or child abuse.  

I believe abortion needs to stay completely legal & readily available to all women because countries cannot be expected to legislate morality & remain free for all religions.  Also a law that demands women be forced to support another life inside their bodies against their will, expects more from these people's lives & bodies than we expect from the unborn or anyone not a woman of child-bearing age.  Countries must stand up for justice equally for all born citizens so we can't expect more from women than men or the unborn.