saying

[dilligaf]

"all over bar the shouting" Quite frequently used this time of the year.
Where does it come from and what does it mean?
Thank in advance.

[danube]

The results (of a competition, election, etc.) are certain although the official result or decision has not yet been declared.

The term comes from competirive sports, where in the past the final result was shouted or called.

[Quizmonster]

I think the shouting - as well as the called-out result suggested by D above - is the clamour raised by the supporters of the winning team/horse or whatever.
Let's say Bournemouth is two up against Chelsea and there's only a minute of the match left...yeah, I know!...the locals realise the Cherries have won, that it is "all over" really. However, they remain almost silent until the final whistle goes and then they shout their appreciation.
In that last minute it is "all over bar (ie except) the shouting".

[dilligaf]

Thank you both for that.