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Shadow defence secretary Jim Murphy has poked fun at the Liberal Democrats after the party's humiliating performance in the South Shields by-election.
Labour winner Emma Lewell-Buck, a married social worker, was cheered by supporters as she became the first female MP in South Shields.
From the podium, she said:
UKIP's second place finish in South Shields saw them claim 24.21% of the vote in the constituency, having not contested the seat in the last General Election.
By contrast, the vote of all three main parties fell - though only moderately for Labour.
The Conservatives saw their vote drop by 10.04%, down to 11.55% overall, while the Liberal Democrats - who finished third in 2010 - tumbled 12.79% to just 1.42% of the vote.
Newly-installed MP Emma Lewell-Buck claimed 50.51% of the constituency's vote, a drop of 1.51% from the vote share commanded by her predecessor David Miliband.
Labour's Emma Lewell-Buck has won the South Shields parliamentary by-election, with the United Kingdom Independence Party's Richard Elvin coming second.
- Emma Lewell-Buck, Labour - 12,493
- Richard Elvin, UKIP - 5,988
- Karen Allen, Conservatives - 2,857
- Ahmed Khan, Independent candidate - 1,311
- Phil Brown, Independent Socialist Party - 750
- Lady Dorothy MacBeth Brookes, BNP - 711
- Hugh Annand, Lib Dems - 352
- Howling Laud Hope, Monster Raving Loony Party - 197
- Thomas Darwood, Independent candidate - 57
The result gives Labour a majority of 6,505 after claiming over 50 per cent of the vote.
Electorate 62,979; turnout 24,736 (39.28%, -18.42%).
Labour have held the South Shields seat with an overwhelming victory for Emma Lewell-Buck, while UKIP's Richard Elvin claimed a clear second ahead of the Conservative Party.
The Lib Dems have endured a horrendous result, trailing the BNP, the Independent Socialist Party and an independent candidate.
We are expecting the South Shields by-election result within 20-30 minutes.
Latest ITV News reports
Labour comfortably held the seat of South Shields after a by-election marked mainly by UKIP's success and the dire failure of the Lib Dems.