Mr Bercow pledged to be impartial

Conservative backbencher John Bercow has won the race to become the 157th Commons Speaker.

The Buckingham MP received 322 votes to his rival and fellow Conservative MP Sir George Young's 271.

Mr Bercow was "dragged" to the chair, a tradition for the new Speaker. A message will now be sent to Buckingham Palace for approval.

He will replace Michael Martin, who stepped down after nine years in the job amid the furore over MPs' expenses.

Mr Bercow said MPs had bestowed on him "the greatest honour that I have enjoyed in my political life".

'Process of change'

He pledged to cast aside his political views and be "completely impartial as between members of one political party and another".

And he said while the House of Commons had to reform, he believed most MPs were "upright, decent, honourable people" who had not come into politics to "feather their nests" but for public service.

I continue to believe the vast majority of members of this House are upright, decent, honourable people John Bercow Profile: John Bercow

He was welcomed by Liberal Democrat leader Nick Clegg, in short speeches in the Commons chamber.

Mr Brown congratulated him and said in the election process the House of Commons had taken an important step in the "process of change".

He said it was an opportunity for the House to "begin a new chapter" with a new Speaker.

Mr Cameron told him: "We share a collective responsibility for what went wrong, we share a collective responsibility for putting it right."

And Mr Clegg told Mr Bercow he had a "mandate for change" and urged him to get on with it.

The new Speaker Elect will not formally take up the role until after an Approbation ceremony later, when the Royal Commission assembles in Lords, Black Rod is despatched to the Commons, then MPs led by the Speaker Elect walk to the Lords chamber when the Queen's approval is given.