Doubtless, whatever he says, he will be greeted with thunderous applause, standing ovations and tearfully grateful headlines in certain sections of the press.
Speechwriters will have crafted his words very carefully, and we can expect all the usual tired cliches; "hard working families", "do-nothing Tories", "Labour investments" to be hammered into our skulls in McBroon's droning monotone.
But there's one word that definitely won't appear. A word that does not seem to be in Brown's vocabulary. The simple word, "Sorry".
Why not try it Gordon? Go on. Say "Sorry".
Say sorry to your fellow MP's: most of them are going to lose their jobs soon, and many of them will never, ever be MP's again. The party you lead, Gordon, faces decades in the wilderness. You've made a party - a party that won by a landslide 12 years ago - completely unelectable.
Say sorry to the Labour activists, your grass roots, whose best efforts have been wasted, desperately trying to defend the indefensible. There's not a lot you can say on the doorstep, or on your pro-Labour blog, or on Twitter, when faced with a set of massive fuck-ups of these proportions, is there?
Be especially sorry to @bevaniteellie, supposedly the most followed, most influential pro-Labour 'twitterer' in the country, who has wasted months of her life - over 6,500 'tweets' - desperately trying to influence others to vote Labour, but has had to do it almost enitirely with lies and smears about the Tories, because there's nothing good to say about the Labour party, even for the most blinkered and naive like her.
Say sorry to the nation, Gordon: you've made us a laughing stock around the world. When Americans think of Britain, they don't think of a vital partner in a Special Relationship, they think of a declining power, a country with a leader that no-one voted for and no-one wants. They don't see you as a powerful ally, they see you, our Prime Minister, as a weak man, making a fool of himself with his pathetic attempts to touch the hem of their leader. A man who allowed a terrorist to be set free while he was on holiday. That makes us all look a bit silly, doesn't it?
You should say sorry to all of those who have lost their jobs, thanks to your bungled economic policies. And sorry to all those who are going to lose their jobs when the vast, bloated public sector is slashed, and all of the thousand of non-jobs disappear. Yes, all those Outreach Co-ordinators, Diversity Managers, Community Space Challenger Co-ordinators and Enviro-Crime Enforcement Officers are going to be unemployed - and unemployable - next year. Say sorry to them.
Say you're sorry to those who were tricked by the endless "no more bust" boasting and socially-engineered easy credit into over-extending themselves, and are now in negative equity, or struggling to clear huge debts.
Say sorry to all the students who couldn't find a place in University this year, because there just aren't enough, regardless of the 'targets' your government set.
Say sorry to the next generation, who are going to be paying more in tax than they should do for their whole working lives, not to pay for national infrastructure and services, but to pay for the debts that you ran up, in your vast 10 year spending spree, which was all about making you and your government look good, and all about securing your place in history, and not much about making our lives better.
Yes, Gordon, there a lot of people who deserve an apology.
And this is your last chance.