Will you accept?
The invitation's in the post, but will you accept? David Cameron is inviting you "to join the government of Britain".
Before you get too excited, I should point out that there's no peerage, no ministerial Jag and no salary involved. No, the Tory leader wants you to join him in return for absolutely nothing - other, that is, than because you understand that Britain will only be revived "if people stop asking 'Who will fix this?' and start asking 'What can I do?'"
The Tory manifesto he unveils today invites people to be their own boss - setting up co-operatives to run public services, to run their own school, to vote for their police chief, to vote to veto excessive council tax rises alongside much more familiar promises. It is an attempt to capture what the Cameroons see as their big idea - what they call the "Big Society" - a rather more sellable concept than the previous "post-bureaucratic age".
The idea is that power will be given to the users of public services and to voters to exercise more direct control over how services are run. The Tories' "big brain", Oliver Letwin, sees it as powerful an idea as privatisation once was. Just as we now regard as odd the idea of questions being asked in Parliament about why someone's phone line hadn't been installed (this actually happened), he believes we will soon regard it as bizarre that Whitehall runs or heavily controls all schools, hospitals, councils and police forces.
The big question about the "Big Society" is whether people will welcome this invitation and its Kennedy-esque call to arms?
Or will they prefer the idea that ran through Labour's manifesto yesterday that government is there to help you?
Of course, underneath the stark difference in rhetoric, both main parties are both offering a mixture of central government control and public engagement. There is, though, now a real ideological difference in this election - in other words, a real choice.