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Newark's new Conservative MP began his role today in the constituency after beating off competition from UKIP to claim the seat.
Robert Jenrick held off the challenge of UKIP, and even though his winning majority was far less than the Tories in the last general election, it's the party's first by election victory while in power for more than 20 years.
ITV Calendar's political correspondent Paul Brand reports:
Newly elected Newark MP, Robert Jenrick, declined a drink on the job as he re-opened a local pub hit by flooding.
Conservative, Jenrick, defeated closest challengers, UKIP, despite their majority being slashed by 9,000 votes.
Cutting the ribbon (blue, of course), Jenrick wished the pub much success and said he was delighted that this was his first job as local member of parliament.
Danny Alexander has said the Liberal Democrats' poor performance at the Newark by-election was a "deeply disappointing result," but was due to "tactical voting" from the party's supporters.
The Chief Secretary to the Treasury was asked why the party had slumped from a 20% share of the vote to just 2%, a result that saw them lose their deposit.
He put some of the decline down to voters not wanting to see Ukip win the seat from the Tories, saying: "The last thing our supporters wanted was to be represented by Ukip in the House of Commons, therefore there was a lot of switching to other parties."
Defeated UKIP candidate, Roger Helmer, says his party will no turn their attentions to their strategy for the 2015 General Election - but first he needs a good nights sleep.
Controversial Helmer was beaten to the Newark seat by Conservative Robert Jenrick, but UKIP did manage to slash the Tories' majority by around 10,000 votes.
Prime Minister David Cameron has hailed the new Conservative MP of Newark, Robert Jenrick on Twitter by saying he will work to deliver a "brighter future".
Ukip leader Nigel Farage conceded his party had been defeated during the by-election, but hailed the result as Ukip's "strongest ever by-election performance".
Speaking after the result, Mr Farage said: "I think there'll be an awful lot of Conservatives with a majority of less than 10,000 who will look upon this result in sheer horror."
But he admitted he would have liked to have done better in Newark.
"Yes, I mean the majority's halved, but nonetheless for Ukip it's still a good night's work," he said.
After the Conservatives win in the Newark by-election, Labour candidate Michael Payne has revealed he will push Robert Jenrick all the way "to the General Election."
Robert Jenrick, the Conservative candidate, won the Newark by-election with Ukip coming in second and Labour in third.
Speaking this morning, Labour's candidate spoke of how proud he was of his party's campaign during the by-election.
He said: "While this was always going to be a tough by-election, I am extremely proud of the campaign that Labour has fought.
"In the months ahead, I'll continue campaigning on those issues and holding Robert Jenrick to account right the way through to the General Election."
David Cameron has hailed the Newark by-election result as "very good for the Conservative Party" but he said the Tories needed to "work between now and the next election" to win back voters from Ukip, who came out second in the by-election.
The PM was speaking in Bayeux, France ahead of D-Day commemoration events.
Asked how he would win back support from Nigel Farage's party he acknowledged the challenge posed by Ukip:
"The job isn't finished yet but we are on the right track, let's stick at it."
UKIP leader, Nigel Farage, says he is still pleased with his party's progress, despite losing the Newark by-election to the Conservatives:
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The Conservatives will be tremendously relieved that their tightly organised battle plan worked in Newark.