There is a lot of speculation that Boris Johnson, newly elected Conservative Mayor of London, will step down immediately as MP for Henley, Oxfordshire, despite a Times claim on polling day that said he would cling onto both jobs.
I think this would be a mistake and that Boris must step down immediately. The public are very suspicious about politicans, and more so when they appear to hang onto jobs for the sake of it. The news that Independent MEP for the Eastern Region Tom Wise has been recorded saying he is surprised how much money he can screw out of the EU should shock, but not surprise us. If you have the time and energy to do both - for example, a county and district councillor - then that is fine (although you'g have to have very nice constituents to manage that and hold down a full time job!) but you cannot possibly represent a constituency as an MP and be Mayor London.
Do it, Boris, resign. Go out on a high, give the people of Henley the chance to vote for new Conservative representation. It'll look good on you, on the party and on politics itself.