Here's how it works. Call 0203-051-3247 to record a message about why you support Ken, or click here to submit your comments, and we'll use your words to create a film for the campaign.
I support Ken for loads of reasons - but his work promoting the London Living Wage is the thing I always mention when I'm out campaigning.
I also mention that crime is down in London for the fifth consecutive year, and Ken's new policing manifesto will add 1,000 new police to continue this downward trend.
Others point to Ken's role in winning the Olympics, the congestion charge, or his commitment to build more affordable homes. Many supporters like the fact that he's independent-minded. Some people I speak to just can't stand the idea of having a throwback like Boris Johnson in charge.
Whatever your reason for supporting Ken we want to hear from you. Your messages and recordings may be used in future campaign emails, videos, or speeches - so please support Ken by getting in touch.
Call 0203-051-3247 to tell the campaign why you support Ken Livingstone, or click here to send in your comments.