First off, I want you to know that I don't really expect to change your mind about abortion-- this is more about letting you see how the other side thinks, I think. Obviously you have strong reasons for your position, and a random discussion on a blog isn't going to drastically alter your underlying philosophy.
BUT I would like to point out that earlier in the discussion you characterized the idea that abortion should not be allowed as a religious belief, and said that religion has no place in politics.
And you've asserted again and again that you believe that life begins at birth, without giving a scientific or philosophical reason why this is so.
So, really, your belief that life begins at birth is ALSO religious in nature, even if it's not the official dogma of a mainstream religion.
While most people's beliefs CAN be explained by philosophy or science, I don't think most people have actually examined the basis for their beliefs-- most voters are voting based on their "religion."
For instance, a lot of people believe we should give more money to public schools. But when you ask them why public education is important, they don't respond with the results of studies or the philosophical reasons why a nation should have a unified educational system available to all.
Abortion is a touchier issue because the divide between pro-and con- is deeper, and the topic is a more emotional one than finance reform or EPA regulations.
But if we limit voting to those who have carefully explored and examined the philosophical and scientific underpinnings of all their beliefs, we'll have a pretty small voting pool. (And who decides what's been properly examined???)
Also, it's not really fair to dismiss a person's beliefs just because they're 'religious' or 'unexamined.' Because many people have a pretty good 'gut' for these things, even when they haven't thought it through all the way.
Of course, not everyone agrees on contentious issues... which is why we vote in the first place, and why we lobby elected officials, and why we all try to change hearts and minds. But the strength of a democracy is that Linus Pauling and that crazy guy on the street corner BOTH get their say, and that no one gets to say who's vote is worth more.
So I would hope that while I can't convince you to accept my positions on when life begins, or whether abortion is good or bad for the mother, I can at least convince you to consider the idea that there is nothing wrong with voting your deeply held beliefs.
And that there's nothing wrong with encouraging your opponents to vote based on THEIR deeply held beliefs. Because that's what Democracy is supposed to be!