Then all McCain Catholic supporters should confess as well, as he is in favor of embryonic stem cell research...aka abortion.
You obviously know nothing about proportionalism or the official position taken by McCain in favor of using only adult stem cells.
True, using embryos left over from fertility treatments, but not cloned embryos. (Not that that makes much difference.)
However, since one or the other was going to get elected, I'd say those that didn't vote at all, or voted for a third party rather than vote for McCain have more to repent of because, by sin of omission/commission, they put a person in charge who supports infanticide.
We could go on like this all day. ;)