Stockport 0-1 Southport
High-flying Southport won their eighth away game in a row to spoil Jim Gannon's home return to Stockport.
The match began in fiery fashion as Southport's Shaun Whalley saw red for foul on goalkeeper Mark Halstead.
But the 10 men defended stoutly and took the lead when Halstead dropped the ball into the path of Karl Ledsham, who bundled the ball in.
County almost snatched a late equaliser but Antonio German prodded wide after great skill from Aaron Coles.