The current Mayor's predecessor was Ken Livingstone and he was a member of the Labour Party although they didn't support his campaign to become mayor.
Labour
Yes, Boris Johnson is a Conservative.
democratic party
Mayor Richard T. Crotty is a Republican.
Sometimes. It's not required.
Mayor Boris Johnson of the conservative party
Shirley Franklin is Democratic
London, and the United Kingdom, does not have a president. On the other hand, the mayor of London is Boris Johnson from the Conservative Party. The Prime Minister of Great Britain is David Cameron, also of the Conservative Party.
Republican Party
The Mayor then asked first if The Mayor allowed to make a party at our house then we give a full supply goods to party. We do not need to invite our friends as The Mayor help us to invite our friends.
democratic party
Who is the chairman (and what party does he/she belong to?) Las vegas.