Elections: Change to PR or keep first-past-the-post?

UKIP picked up nearly four million votes, and yet only won a single seat in Parliament at the general election.

Some 331 of 650 MPs elected in May won their seat with less than half of the vote in their constituencies.

Daily Politics reporter Ellie Price looks at the calls for a change in the voting system, but also hears why some think first-past-the-post leads to strong governments.