He is not allowed to receive communion. He is not excommunicated, but I would assume it as close as he can get.
I'm not a Catholic either, but I do respect their belief that abortion is wrong.
Apparently the term is latae sententiae excommunication.
http://www.catholicplanet.com/articles/article78.htm
Promoting Abortion
Those Catholics who publicly announce their denial that abortion is always gravely immoral, or who publicly promote abortion, or who publicly argue in favor of legalized abortion, also commit a mortal sin and also incur a sentence of automatic excommunication.
This sentence of excommunication applies to Catholics who are politicians, as well as to those Catholics who are political commentators, or public speakers, or who write or otherwise publicly communicate their erroneous view that abortion can be morally-acceptable or that abortion should be legal. This sentence of excommunication also certainly applies to those Catholics who claim to be theologians or Biblical scholars, but who believe or teach that abortion is not always gravely immoral.
Those Catholics who promote abortion are automatically excommunicated for two reasons. First, they have fallen into the sin of heresy by believing that abortion is not always gravely immoral (canons 751 and 1364). Second, these Catholics are providing substantial assistance for women to obtain abortions by influencing public policy to make abortions legal, and to keep abortions legal, and to broaden access to abortion. Those who provide such substantial assistance commit a mortal sin and incur a sentence of automatic excommunication (canon 1398).
I am Catholic and a woman who has an abortion is automatically excommunicated by the seriousness of the sin. And for those who believe they are not in serious sin and therefore not publicly excommunicated are still answerable to God,so no one gets out of anything Catholic or not.There are many priests and pastors out there who are not leading their flock towards God but instead leading them straight to hell. And heck that's if they even believe in hell or sin anymore. I have seen a drastic change in attitude from this forum and at times question just how conservative people are. Maybe everyone is just fed up with so little to hope for in the candidates that are out there and who can win. The idea of Hillery,I think a lot of the dems hate her as much as we do,or Rudi winning make me sad and sick to my stomach.