After an unexpected win, the Conservative Party took 331 seats in the British Parlimentary Election, resulting in David Cameron becoming the Prime Minister of the United Kingdom for a second term. The Labour Party was all but wiped out by the Scottish National Party in Scotland and suffered disappointing results elsewhere.
The youth vote and celebrity endorsements such as Russell Brand could not help Labour boost their campaign. http://www.theguardian.com/culture/2015/may/08/russell-brand-stages-climbdown-over-support-for-ed-miliband-labour-comedian
The Liberal Democrats were left with just eight MPs while UKIP, the right wing populous party won just one seat.