This might be an off topic question, but how do the results change (if at all) when accounting for the age of the people involved?

That is, how do politicians do at predicting the opinions of people +/- 5 years of their own age (which may be different than the total for the district)?

I've always been curious if politicians are just "behind the times" (due to an average age higher than the average age of constituents), leading to systemically conservative views.