Currently just eight points is the difference between Crewe in second spot and 13th-placed Bromley.
Five points split Crewe and Grimsby in 9th with all to play for in the second half of the season.
Doncaster suffered a setback at the weekend with defeat to Port Vale but they still remain in a good position to claim a promotion place.
Here we look at the latest promotion odds currently on offer with league sponsors SkyBet, running from least likely to most likely.
Have your say on how you think the promotion battle will finish via our social media channels.
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