I read the article. Nowhere does it say they were all Tories. doesn’t give party affiliation.
http://www.dailymail.co.uk/news/article-2690373/I-asked-underage-boys-sex-drink-drug-fuelled-Tory-party-conferences-claims-former-activist.html
Which should clear things up a bit. Cyril Smith, if I recall correctly, was Lib Dem, but as another poster said, the Tories are shot through with pedophiles and homosexuals.