Has there ever been a more blatant political about-face than what we've witnessed in the past few weeks of the United States presidential election? Mitt Romney transformed the race for the White House during the first presidential debate, which he was widely considered to have "won".
He gave a strong performance, against a relatively weak one from President Obama, but the shift in political messages was the truly remarkable feature of the event. The key to Romney's success has been to present himself as "severely conservative" - to use his words - during the Republican primaries, but then as "Moderate Mitt" in the general election campaign.
Romney adviser Eric Fehrnstrom famously said that after the primaries were completed that the Republicans would simply shake up the Etch-a-Sketch and start over - that is, erase all those messages from the primaries and create new ones for the general election.
And sure enough, Romney and his campaign have made a concerted effort to appear more palatable to the general electorate by offering positions in apparent contradiction to those on which he campaigned in the primaries.
For example, after saying for months that he will reduce taxes by 20 per cent across the board, in the first debate he said, "I will not reduce the taxes paid by high-income Americans".