Create an independent "Advertising Standards Agency" for political campaigns.

47% of people believed the "£350m" claim made by the Leave campaign - http://goo.gl/OTzLHb - few people will verify such claims using sites such as fullfact.org. Every political campaign broadcast, leaflet, advert and billboard should, in future be independently checked before release. Errors should be corrected, ambiguities and uncertain predictions appropriately caveated. Yes, this will costly and time consuming, but such a cost will be trivial compared with the cost to our democracy.