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...
5. 2015 - Burton
The Brewers were shock leaders at Christmas with 45 points from 22 games. Although Wigan were crowned champions, Burton would finish second and win automatic promotion with 85 points. Barnsley won the last promotion spot via the play-offs. Photo: Tony Marshall
6. 2014 - Bristol City
Steve Cotterill's side sat at the summit on 42 points from 22 matches. The Robins refused to surrender their lead and claimed the silverware with 96 points, while they also won the EFL Trophy that season. MK Dons also went up automatically, while Preston were triumphant in the play-offs. Photo: Paul Gilham
7. 2013 - Leyton Orient
The Londoners were ticking along well at Christmas and averging the two points per game needed for automatic promotion. However, the barnstorming form of Kenny Jackett's Wolves meant they took top spot, with Brentford finishing second. Orient clinched third but lost the play-off final to Rotherham. Photo: Jamie McDonald
8. 2012 - Sheffield United
Perhpas the biggest shock of the past decaide. The Blades had garnered 43 points in 23 games but would go on to suffer play-off heartbreak for successive seasons. United jettisoned to fifth with 75 points as Doncaster were crowned champions and Bournemouth took second. The Yorkshire side the lost to eventually-promoted Yeovil in the play-off semi-finals. Photo: Harry Engels