SOMEONE did a smart job digging dirt on the Tories as the election campaign got under way. Almost three years after two MPs were accused of accepting money to raise questions in Parliament, one of them resigned after fresh evidence was leaked. Another Conservative leader quit after a tabloid threatened a story on a gay affair with an assistant. Yet another left after admitting to an affair with an alcoholic woman. The Sun followed with a picture of a Tory MP kissing a 17-year-old "night club hostess" in a park. One after the other, Tories quit the election business. And those who didn't gave Labour plenty of high ground to speak of morality, which deflected embarrassed Tories from pointing to Labour's double-dealing.