The Liberal Democrats are to table proposals in Parliament for a fixed four-year general election cycle.
Ming Campbell told the BBC:
“It’s high time, in my view, that the decision about a general election is not part of the discretion of the Prime Minister.
“Inevitably in those circumstances the Prime Minister’s attitude will be conditioned by what he thinks is best for him and best for his party.
“We should have it done on a fixed full-term basis then everyone knows where they stand, the public has a degree of certainty and a degree of confidence in the process, which the events of the last week have shown is sadly lacking.”