Two first-half goals helped Swindon Town to a third successive win to leave Notts County floundering in the League One bottom four.
Nile Ranger put the Robins ahead on 11 minutes, firing Alex Pritchard's cross high into the net from close range.
Mustapha Dumbuya then brought down Nathan Byrne in the box to allow Dany N'Guessan the chance to slot home a 28th-minute penalty.
Ranger's strike was his fourth goal of the season - but his first in a month.
N'Guessan is now the Robins' sole top scorer with five for the campaign.
Notts striker Danny Haynes thought he had reduced the deficit 13 minutes before half time when his effort was ruled out for offside.
Haynes then blazed a late penalty over the bar following Yaser Kasim's foul on Callum McGregor.
But Swindon had gone even closer to a third goal early in the second half when Byrne fired against a post after following up Pritchard's free-kick.
VIEW FROM THE DRESSING ROOM
Swindon Town manager Mark Cooper told BBC Wiltshire:
"Two-nil is a horrible scoreline. It was very, very risky.
"If they score it becomes an interesting game and I just felt that we had so many chances to kill the game.
"It made us have a nervous spell in the second half.
"But we played very well again. Football-wise, we were controlled and passed the ball very well, and with a purpose."
Swindon Town 01 Foderingham 02 Thompson (Barthram - 45' ) 14 McEveley Booked 04 Luongo 05 Hall 22 Ward 03 Byrne 11 Pritchard (Mason - 77' ) 09 Ranger 15 Kasim Booked 12 N'Guessan (El-Gabbas - 70' ) Substitutes 08 Mason 19 Thompson 23 Barthram 25 Belford 29 Branco 33 Ajose 34 El-Gabbas Notts County 01 Bialkowski 02 Dumbuya 03 Sheehan 22 Fotheringham 04 Liddle 06 Leacock (Smith - 45' ) 16 Labadie Booked (Haber - 45' ) 28 Boucaud Booked 10 Haynes 08 McGregor 14 Coombes Booked (Bell - 61' ) Substitutes 05 Smith 11 Bell 12 Haber 15 Arquin 20 Campbell-Ryce 21 Thompson 23 Speiss
Ref: Darren Deadman