Match ends, Swindon Town 1, MK Dons 2.
A fine last-minute strike from George Baldock gave MK Dons victory at fellow play-off hopefuls Swindon.
Michael Smith headed the hosts into the lead from close range after visiting keeper David Martin parried Alex Pritchard's initial effort.
Antony Kay levelled with a powerful header from a Ben Reeves corner.
Dean Bowditch should have put them in front, but home keeper Tyrell Belford denied him before Baldock fired into the top corner to win it.
Swindon manager Mark Cooper told BBC Wiltshire:
"I thought first half we deserved to be winning, and we should have killed the game off at the start of the second half.
"We dropped a little bit deep, we looked tired in the second half.
"We concede from a free header from a corner and then we try and win the game and leave ourselves a little bit exposed.
"We're not quite there yet."
MK Dons Manager Karl Robinson told BBC Three Counties Radio:
"It was just a very good away performance. I said this was big. I think you've seen how we celebrated, how important it was to us all.
"Our game plan was to be 0-0 at half-time. We felt if we get to half-time 0-0 we have enough quality to go and win it.
"Today, I thought Dele Alli was sensational. But what helped him was Alan Smith. I thought that was his best game in an MK Dons shirt.
"I will put Danny Collinge on. I don't really care how old he is if he's good, he's good. Whether you're 17 or whether you're 49, if you've still got legs and you can still play, I'll put you on."
- 2ThompsonSubstituted forMcEveleyat 83'minutes
- 28SmithSubstituted forN'Guessanat 86'minutes
- 15KasimSubstituted forMurphyat 69'minutes
- 29Rossi Branco
- 18BaldockBooked at 90mins
- 24KayBooked at 32mins
- 6ColeSubstituted forPowellat 45'minutes
- 27OdelusiSubstituted forBowditchat 76'minutes
- Jeremy Simpson
- Shots on Target
Second Half ends, Swindon Town 1, MK Dons 2.
Troy Archibald-Henville (Swindon Town) wins a free kick in the attacking half.
Foul by Izale McLeod (MK Dons).
Goal! Swindon Town 1, MK Dons 2. George Baldock (MK Dons) left footed shot from outside the box to the top left corner.
Corner, MK Dons. Conceded by James McEveley.
Attempt saved. Dean Bowditch (MK Dons) right footed shot from the centre of the box is saved in the centre of the goal.
Substitution, Swindon Town. Dany N'Guessan replaces Michael Smith.
Substitution, Swindon Town. James McEveley replaces Nathan Thompson because of an injury.
Attempt saved. Izale McLeod (MK Dons) left footed shot from the left side of the box is saved in the bottom right corner.
Foul by Nathan Byrne (Swindon Town).
Izale McLeod (MK Dons) wins a free kick in the defensive half.
Foul by Jacob Murphy (Swindon Town).
Dean Lewington (MK Dons) wins a free kick in the attacking half.
Attempt missed. Bamidele Alli (MK Dons) right footed shot from outside the box misses to the right.
Substitution, MK Dons. Dean Bowditch replaces Sanmi Odelusi.
Foul by Michael Smith (Swindon Town).
Bamidele Alli (MK Dons) wins a free kick in the attacking half.
Louis Thompson (Swindon Town) wins a free kick in the attacking half.
Foul by Sanmi Odelusi (MK Dons).