The polls might give the Tories a huge lead but Theresa May has to create a sense of urgency among the voters: they have to understand the dangers of not coming out to support her.
The choice is either to have Mrs May in Number 10 or Jeremy Corbyn. The prospect of Mr Corbyn is laughable – but it is precisely that sense of impossibility he hopes to exploit, to slip into Downing Street almost by accident.
Mrs May understands this. It is surely one reason why she has committed the Tories to cutting immigration to the tens of thousands.
This poses a clear choice to the electorate. Would you prefer a Tory government that believes Brexit will only mean Brexit if it results in a lower rate of migration? Or would you back a Labour government that is philosophically opposed to almost any immigration control at all? This is why so many Ukip supporters are returning to the Conservatives – Nigel Farage concedes that the Tories are in a strong position.
Another reason to vote to stop Mr Corbyn is that he would make the country poorer. He gave his first big speech of the campaign yesterday and launched an attack on what he called “wealth extractors”.
Mr Corbyn conflates a few rotten apples, such as Philip Green, with the entire free market system, and his policies would do tremendous harm. Raising taxes on those earning over £70,000 a year, as Labour is reported to support, would squeeze the middle-class and reduce consumer spending. A higher corporation rate would kill jobs.
The Labour agenda – that little of it which is known and comprehensible – sounds so mad that some Tories might be tempted to put their feet up, consider the election in the bag and just try to enjoy themselves.
And yet their own last-minute scramble to find candidates to run in Labour-held seats shows how surprised even the Conservative machine was by Mrs May’s announcement. We have no doubt that it can be made up for, but time is tight and election narrative can so easily swing away from a prime minister.
There is no cause to panic. But, equally, there are signs that the Government understands there is no case for complacency. It must do two things.
Offer a radical manifesto that will empower the British voters. And make crystal clear the danger posed by Mr Corbyn and his progressive alliance – to Brexit, to the borders and to the economy.