Following comedian Eddie Izzard's video for Labour, Dragon's Den star Duncan Bannatyne will become Labour's 'seaside tsar' should they win Thursday's election. Other famous Labour fans include longtime supporter J K Rowling and actor David Tennant.
The Liberal Democrats, buoyed by Nick Clegg's unexpectedly strong performance in the televised leaders' debates, are supported by actor Colin Firth, scientist Richard Dawkins, Coldplay's Chris Martin, actor Kate Winslet, the bands Razorlight and The Kooks and musician Brian Eno.
The Conservative Party is supported by former Arsenal footballer and TV presenter Ian Wright, ex-Countdown presenter Carol Vorderman, TV presenter Kirstie Allsopp and newsreader Trevor MacDonald.
However, a poll conducted by the web platform OpenAmplify found that voters were less engaged with Izzard's video for Labour than party election broadcasts not featuring celebrities.
OpenAmplify analysed how people reacted to, commented on and linked to the election broadcasts on the parties' official YouTube channels and how this filtered across other social media channels such as Twitter.
Internet users engaged with a Liberal Democrat video, "Say Goodbye to Broken Promises", once every 36 views, giving it the highest engagement level of the seven broadcasts studied.
"Brilliant Britain" starring Izzard was only engaged with online once every 107 views, though it was watched 93,669 times - greater than "Say Goodbye to Broken Promises" which had 30,093 views.