Ideally I'd expect politicians to pick and choose "facts" that suit there arguments (or on a rare occasion actually have their arguments informed by data) and to ideally reference the sources so they can be checked by anyone who cares.
Is that an "elite" approach then?
Of course, what I describe above is an ideal - politics is a mucky business and the essence of a democracy is essentially that we get to choose between the liars. However, what I do have difficulty with is the idea that reasoning from actual factual data or scientific hypotheses has no role in politics.