You're right, samcol, it's now or never. Sadly for your position, the choice will be: never.
Here's the deal. Your politicians lied to you. That's what they do. They tell whoever they're talking to RIGHT NOW what they want to hear ("We'll end abortion this term!"), and then when they get in office, they do what's pluralist and popular to preserve their reelection chances. That's how politics work.
There's no way abortion will EVER be outlawed in the current climate. Anyone who proposes it is committing career suicide. There's just not a strong enough plural mandate for it. There's a relatively strong minority anti-abortion (I refuse to use the spinphrase "pro-life" unless you're also against the death penalty) faction, and they're loud and noisy, but <a href="http://pollingreport.com/abortion.htm">polls show</a> that they don't have the support of the broad section of America.
It's a mistake to cast abortion as a Republican/Democrat issue. Most Democrats are pro-choice. Some--not most and definitely not all--Republicans are anti-abortion. Don't let divisive manipulators like Ustwo try to tell you otherwise, because the facts don't bear it out.