The Foxes dropped out of the Championship last weekend, while the MK Dons clinched promotion from League Two.
That means Cobblers will have several derby matches to look forward to, but according to fans who voted in a poll on this website Posh are still the big enemy.
The vote asked who you considered to be Cobblers' biggest derby rivals. The results were:
Milton Keynes Dons 19%
Leicester City 29%
Peterborough United 52%
Do you agree with the vote? Or do you think MK Dons will eventually become Cobblers' biggest rivals? Have your say by posting a comment below (it's quick and easy to register) or click here to email the ChronFor the latest League One headlines - click here
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