It was good to see Greg Palast, my favourite 'gumshoe' reporter, back on last night's Newsnight. He's one of those maverick journalists who works to his own agenda, and lovesÂ nothing more thanÂ delving into complex documents nobody else knew even existed. Last night he was back on one of his 'favourite' subjects - how the US electoral system is preventing the poor and theÂ dispossed from voting. And how that might decisively affect the Presidential election. Again.