The Labour candidate hoping to be re-elected in Tony Blair's former constituency has told voters he is "no supporter of Corbyn".
Phil Wilson, who has held the Sedgefield seat since Mr Blair stood down in 2007, said he will "put local people first" and promised he will oppose his party leader if necessary.
Mr Wilson last year called on Jeremy Corbyn to resign as party leader in the aftermath of the EU referendum.
And writing on his re-election Facebook page, Mr Wilson said: "Your vote here on June 8th will only decide who is your local MP - not who gets to be the Prime Minister.
"I am no supporter of May and I am no supporter of Corbyn."
Mr Wilson then claims he will stand up for local people in the County Durham constituency, adding: "If this means standing up to May, I do.
"If this means opposing Corbyn, I do.
"I am for Labour, it is my name on the ballot paper here, not Corbyn."
The candidates for Sedgefield, which covers the Trimdon villages, are:
* Dehenna Davison (Conservative);
:* John Grant (Ukip);
:* Stephen Psallidas (Liberal Democrat);
:* Melissa Wilson (Green);
:* Phil Wilson (Labour).
Meanwhile, Conservative candidates in the region claimed Labour counterparts have been canvassing "that a vote for them is not a vote for their unpopular leader, Jeremy Corbyn".
In a joint statement they said: "Every vote for Labour is a vote for the views and policies of its leader, Jeremy Corbyn.
"Local Labour candidates do not have the luxury of pretending their leader does not exist.
"If they objected to his leadership they should have had the courage of their former colleagues, Iain Wright and Tom Blenkinsop, who, by standing down, put their country and conscience
before their ambition and careers."
James Wharton, working to be re-elected for the Conservatives in Stockton South, said: "Every vote counts and every vote for Labour makes Jeremy Corbyn stronger."