There are markets on Manifold for every constituency in the upcoming UK general election but as far as I know, nobody has written some code to extract the leader in each constituency to create a seat projection. Will somebody do this by market close in one week? 

Feel free to take this market's liquidity as a sort of bounty if you want to create this. 

If you add in other features like sensitivity analysis, live updating, or a colour-coded map I will be very impressed and grateful and will maybe put up a NO limit order for you to take as a thank you. 

Needs to be freely available to others to resolve YES. If you just tell me you have a private one, that doesn't count. 