A late goal from Sam Hoskins prevented Stags from closing the gap on the Cobblers following a 84th minute goal from Will Swan.
Match photographer Chris Holloway captured just some of the fans in this gallery. Take a look and see if you can spot someone you know.
Get more Stags news, here.
9. Stags 1 Northampton 1
Stags fans at the Boxing Day match against Northampton Town. Photo: Chris Holloway
10. Stags 1 Northampton 1
Stags fans at the Boxing Day match against Northampton Town. Photo: Chris Holloway:rf
11. Stags 1 Northampton 1
Stags fans at the Boxing Day match against Northampton Town. Photo: Chris Holloway
12. Stags 1 Northampton 1
Stags fans at the Boxing Day match against Northampton Town. Photo: Chris Holloway
3 / 4