"The billion-dollar election." Get used to that phrase, because you’ll be hearing it a lot over the next year and a half. That’s the total that all candidates for the presidency are expected to spend on their campaigns between now and 2008. It’s a staggering figure that critics will surely cite as evidence that money has thoroughly corrupted politics. Newt Gingrich shocked the bluenoses back in 1996, when he said that there was too little money in politics, not too… more