Defender Jordan Turnbull says the Cobblers squad feel they are very much still in the play off semi final with Cheltenham Town.
The Robins have a two goal advantage from Thursday's first leg, but the Cobblers will travel to Cheltenham with hopes of turning the score around.
"We've got to stay positive. Things didn't fall for us on Thursday but we are only half way through the tie," he said.
"There are 90 minutes to go on Monday and we need to go there and score first.
"We have worked really hard this season, we don't want it to slip away so we will go there and give it our all. We were hurting after Thursday but we have picked it up, we are preparing well for Monday and we can't wait for that game to come along.
"We had some good opportunities on Thursday but we couldn't quite take them. We put a lot of balls in the area but we couldn't quite make it pay. But we still think it is all to play for.
"We felt we were due at least one more penalty on Thursday. Scott Wharton was tripped, Charlie Goode had his shirt ripped but we can't look back, they weren't given so we have to look forward and we will go there confident we can make things tricky for Cheltenham. We think there are a few more twists and turns to come yet."