Cody McDonald scored the only goal as Gillingham maintained a two-point lead at the top of npower League 2 with a 1-0 win at Chesterfield.
McDonald headed home from close range five minutes into the second half at the Proact Stadium, extending the Gills' unbeaten run to four games.
Second-placed Port Vale were also victorious, winning 1-0 at Torquay United courtesy of a Calvin Andrew strike.
Burton Albion brushed aside Exeter City 4-2 to record a seventh successive home league win and move into the automatic promotion places in third. Michael Symes, Marcus Holness, Jacques Maghoma and Lee Bell struck for Albion before Guillem Bauza and Scot Bennett restored some respectability for the Grecians.
Northampton Town moved up two places to fourth with a 1-0 win over Plymouth Argyle, who dropped to the bottom. Clive Platt scored the Cobblers' winner after 72 minutes.
AFC Wimbledon took advantage of the Pilgrims' loss, and the failures of Accrington Stanley and Barnet to win, to climb off the bottom and out of the relegation places.
Kevin Sainte-Luce scored the only goal 10 minutes from time as Wimbledon won 1-0 at Dagenham and Redbridge, while Accrington, however, still claimed a creditable 2-2 draw against Play-Off contenders Cheltenham Town at home.
Cheltenham twice led through Marlon Pack, the first from the penalty spot, but James Beattie responded to both goals for Stanley.
Barnet played out a goalless draw with Rochdale while another side in trouble, Aldershot Town, won 2-0 at home to a Fleetwood Town side who ended the game with nine men. Danny Hylton struck twice for Aldershot before the dismissals of Jamie McGuire and Alan Goodall. Craig Reid also missed a penalty for the hosts.
Goals from Barry Corr and Britt Assombalonga saw Southend United come from behind to win 2-1 at Wycombe Wanderers, who had led early through Dean Morgan. Oxford United's clash with York City ended 0-0 while Morecambe and Bristol Rovers drew 1-1. Rovers' Eliot Richards cancelled out a second-minute goal from Jack Redshaw.
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