In the early hours of this morning ESC projected the slogan ‘We're feeling blue' on to News International's new printing facility at Waltham Cross, as well as turning the side of the building completely blue.
Then, at 8am, a 9m-high chimney on the roof of the News International headquarters in Wapping began puffing-out blue smoke to signify The Sun's alignment with the Party.
The Sun has turned its back on New Labour after 12 years of support.
To see a video of the event click here.
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