Here's a solution to the second homes scandals that are rocking every political party.
Have all the MPs stay in a specially built, high security dormitory.
Something like Wandsworth prison. Luckily it looks like most of them have met the minimum qualification of committing a crime such as fraud.
Now the MPs may argue against the single dormitory for reasons of security.
They might argue that having them all in one place would enable evil terrorist nations (like Iceland) to decapitate the country by blowing up this hypothetical building leaving us poor saps rudderless and easy to invade.
It's true that any innocent and well meaning politicians might end up being corrupted in the dorm, much like convicts learn new criminal tricks off the old hands. However we must balance that against the possibility of a terrorist nation (like Iceland) blowing up the building and thus raising the average moral standing by a statistically significant amount.