We are doing some essential maintenance work and you will not be able to register or update your profile setting until we've finished, which should be at about 9pm this evening.
We apologise for any inconvenience - you will be able to register shortly. In the mean time you will still be able to log in as usual.
A letter from David Sanders, Regius professor at the University of Essex, to Anthony King, professor of government and a leading authority on British politics who died earlier this week
