According to the Mirror, to win the election by "buying" 20 seats. Crooked basterds.. but of course they'll get away with it because f*ck you thats why.
http://www.mirror.co.uk/news/uk-news/busted-24-tories-how-broke-7467603 Where does it say that? Unless it's a different article, this says 24 broke the spending rules.