I think it is really important to figure out what proportionate reason is. On the one hand we have abortion-which kills what? how many babies a year --- I don't really know the current popular statistic--but a lot.
So if a person is going to be voting for a candidate who supports abortion (but not specifically because of his or her position on abortion)- there needs to be a reason proportionate with the deaths however many people a year a killed through abortion, in order to justify that vote.
Same deal with embryonic stem cell research- or any other intrinsic evil. How many lives and what impact does in have? And then does the reason I am voting for that person impact as many lives in the same fundamental way as does that intrinsic evil?
For example a vote for Obama could be allowable if a person genuinely believes that McCain/Palin puts us in reasonable threat of nuclear war, or that close to the same numbers of people will die because there is no national healthcare, etc. A vote for McCain could be allowed if a person believes that he will actually do something to limit abortion access in a large scale way, since that would be comprable to lives taken through allowing embryonic stem cell research to go forward.
Do I have that right there David?? Or close?
I don't think its that cut and dry - for example, Bush was really pro-life - I do believe he cares about abortion and wants to stop it. Yet Bush, with the executive branch, both houses, the judiciary, and the majority of governors in his parties pocket, could not stop abortion.
Now we have McCain whose statements and actions on abortion have not convinced me the guy is pro-life at all, but rather pro-federalist. He thinks Roe V Wade was wrong only in as much as it hurt states rights. He may personally think abortion is wrong (which I don't think he does even though he says so) but that isn't reflected in his policies anywhere. Additionally he raises concern with stem cell research because it demonstrates that he isn't convinced in the life of the embryo.
The reason I mention all of this is that in order to have a meaningful discussion about proportionate reasons, one has to make what I consider a huge and unreasonable assumption - that McCain will actually do something to end abortion. It's a big assumption all the way from McCain actually appointing a pro-life judge, to judges like Alito actually voting to overturn it when they have said they would be hesitant to do so in the past. There are literally stacks upon stacks of assumptions one has to make to conclude that electing McCain is a vote against abortion.
Then even if we make all of those assumptions, all that has been accomplished is the states now have the right to make abortion legal or illegal if they choose. So now begins the other 50 individual fights, which a reasonable person knows will never result in abortion being stopped in all of the states, and therefore whatever states are left will get all of the abortion business - net result, no reduction in abortion, and possibly adult womens lives at risk due to back alley abortions. Finally we have to assume that all of the research showing laws against abortion are ineffective means to stop abortion are wrong. That is a lot of assuming.
On the other hand, Obama who is unabashedly pro-choice (though not the extreme folks make him out to be and any research on it will reveal that) really can't do more harm on the subject than is done already - our laws protect abortion at any point in the pregnancy and allow anyone to get one. Anyone woman anywhere can get an abortion anytime in our country. We've tried voting pro-life polititions are its gotten us no where.
Obama does have some items in his platform that I believe will reduce abortion. I don't believe its possible for Obama to increase abortion, but his plans that directly help the poor will reduce it. I also believe those in the "pro-life" community that argue against this point are doing themselves and the cause serious harm.
My conclusion here is that we can't evaluate proportionate reasons on the matter of abortion because in either case there will be no end to abortion - we have to make major assumptions about McCain to think otherwise, and then continue those assumptions within each state, and then ignore all of the research showing laws on abortion do not work to stop abortion.