The Green Party candidate has ceased campaigning in Corby just one week before the General Election.
Steve Scrutton is standing in the most marginal seat in the county, where Tory Tom Pursglove had a majority of just 4.3 per cent in 2015.
His name will still be on the ballot but he has stopped all campaigning.
A Northamptonshire Green Party spokesman said: “We stood in this seat to ensure Green issues were clearly on the agenda, but we continued to monitor the situation and listen to our supporters during the campaign.
“Having done this, we now feel that ceasing campaigning is the right decision, and are satisfied that environmental issues are on the agenda and being taken seriously.
“We want to thank Steve for all of his hard work and dedication, and for standing in Corby to represent Northamptonshire Greens.
“We also want to thank all of our members and supporters in Corby and East Northants for their continued support.”
When asked who the Green Party was backing, the spokesman declined to comment.
He added that they will continue to campaign in the other six seats in Northamptonshire as planned.
The spokesman said: “It is important that we are clear, this is a unique situation to Corby, and across all other constituencies in the county, we are putting our all into our continued campaigns on the run up to June 8.”