I don't think they'd do that. The purpose of the fluff is not (usually) to deliberately conceal their beliefs. It's there because it's what some people want to read. They want a candidate who "cares". I don't think the people who write the fluff would have any motivation to try to beat fluff filters.
Come to think of it, instead of trying to beat the filters, what if they specifically cooperated with them so that they'd filter out nothing at all? Think of what a great boast it would make: "I'll take you straight to the point, and these folks over here will prove it mathematically". I could picture Ralph Nader trying this.
