CHESTERFIELD needed a late equaliser from on-loan striker Deane Smalley to preserve their five-point lead at the top.
Smalley had opened the scoring against Aldershot after seven minutes, but the visitors threatened to cause an upset thanks to a brace from Tim Sills.
Only a month after joining the club from Stevenage Sills scored after 61 and 79 minutes – the second coming shortly after Alex Rodman had failed with a penalty.
But Smalley made it seven goals in eight games five minutes later when he slotted home.
It extended Chesterfield’s unbeaten run in the division to 10 games since November.
Second-placed Wycombe also had to come from behind to draw at home, 1-1 with fellow promotion hopefuls Port Vale.
A Leon Johnson own goal gave Vale the lead just after the interval, but Scott Donnelly’s 57th minute equaliser squared things up – and goalkeeper Nikki Bull preserved the home side’s point when he saved a penalty from Tom Pope.
Rotherham are only three points behind them now after a 3-1 win over Crewe, although the South Yorkshire club have played a game more.
Nick Fenton opened the scoring after 43 minutes, Ajay Leitch-Smith levelled things up after 62 minutes, but with only six minutes remaining top scorer Adam Le Fondre restored the home side’s lead and Ryan Taylor made the points safe.
Shrewsbury were 2-0 winners at Southend and move up from sixth to fourth. The goals came from Jon Taylor after 43 minutes and Matt Harold (60).
Gillingham moved back into the final play-off spot despite being held to a goalless draw at home by Oxford, while Morecambe and Cheltenham drew 1-1 at the Globe Arena.
Torquay sent bottom club Stockport closer to the drop with a 2-0 victory.
Stevenage were 2-0 up against Accrington Stanley with only two minutes left, but it ended 2-2.