The absolute howler made this morning by Shadow Chancellor Alan Johnson, who failed to be able to name the rate of employers NI contributions, for me is an absolute clanger and will end up ranking alongside Clegg's misfire over the value of the state pension for political error making.
You can watch the clip here (4 minutes in!)
When politicians take up their jobs, be it as a Minister, Shadow Minister or even just an MP there are always basics you need covering. I think it was Tony Blair who was always kept up to date with the story lines on Eastenders and Corrie should anybody ask. A very senior Conservative once told me he was always briefed on the price of milk or a gallon of petrol (and the like) before doing a political interview; being caught out on stuff like that makes you loo out-of-touch. Today made Johnson look economically illiterate.
I had my own "version" of this at the General Election. One resident asked me to direct him from his house to Strangers Hall by foot as my test of local knowledge. He wouldn't vote for anybody who couldn't do it. I got it right, including the short cuts because you were walking rather than driving. I still wonder if the others did and who he voted for? Radio Norwich did a similar quiz about the constituency, including naming the destinations of various bus routes, where various shops are and local events; I got them all correct and then fell down on naming the singers in Girls Aloud ...