As former Observer political editor Gaby Hinsliff (@gabyhinsliff) tweeted earlier today, Gordon Brown’s post walkabout gaffe (see video below), in which he called an elderly former Labour voter a “bigot”: “Shows how easy it is to forget the first law of broadcast: even if you’re not on air, if you’re miked up you’re effectively on record.”

Channel 4 News was quick off the mark with an online poll on its live election blog, asking: “Does Gordon Brown’s unguarded ‘bigot’ remark make you less likely to vote Labour?” At the time of writing, the ‘no’s” had a 68 per cent majority but watch that space…

Meanwhile, a spoof Twitter account @bigotedwoman and the phrase “Bigoted Woman” are currently trending on Twitter.