Not that the Fratton faithful need informing, but they'll see Pompey happily ensconced at the summit.
Kenny Jackett' s side are looking down on their rivals after defeating Hull City 2-0 in front of the Sky Sports cameras a week ago.
The Blues did face the prospect of not being top on December 25 earlier this week when Doncaster hosted Shrewsbury at the Keepmoat.
A win for Donny would have seen them leapfrog Pompey.
However, ex-Blues boss Steve Cotterill did his old side a favour by engineering Shrewsbury’s 1-0 success.
Pompey are undoubtedly in a strong position, although Kenny Jackett and his troops are well aware there’s still more than half the season remaining.
It was only two seasons ago when the Blues were top of the tree at Christmas but failed to deliver promotion.
But how have the other sides who were in the same position over the past 10 years fared? We've taken a look...
9. 2011- Charlton
Automatic promotion never looked in doubt for the Addicks. They topped the table with 48 points from 21 games before winning the title with a whopping 101 points. Sheffield Wednesday were second and Huddersfield were victorious in the play-offs. Photo: Phil Cole
10. 2011 - Brighton
The Seagulls had only banked 36 points in 19 matches. However, Gus Poyet's men would press their foot on the gas in the new year and claimed the title with 96 points. Southampton were second and Peterborough were successful in the play-offs. Photo: Mike Hewitt