Change Parliamentary rules so that MPs can only remain "in office" for two 5 year terms, (assuming they get re-elected), then they have a mandatory break of 5 years, before they can stand for re-election.
Why is this important?
Many long serving MPs are simply "out of touch" with their electorate. Having received a well paid salary for years, they have no idea, how, many of their poorer constituents, have to cope on low wages or benefits !