the fixed term was for 5 years, setting the date for next election to May 2015 and every 5 years after that. the repeal act set an automatic dissolution to 5 years after parliament sits. the significant change was to return the power dissolve parliament early without a vote. there is an...
junior minister will have to deal with the commons. as Foreign Secretary is so often away this is common, much less irregular than say Home Secretary. i reckon this and avoiding more reshuffling is behind this move.