The two MPs, who are friends, have nominated Mr Smith according to the party website although Corbyn is favourite to be re-elected as leader when the result is announced at the party conference in Liverpool on September 24.
The situation is awkward for both MPs as they know many members of their local constituency parties support Corbyn.
In the case of Ellesmere Port MP Mr Madders the scenario is particularly embarrassing as he is in Corbyn’s shadow cabinet with a health portfolio and his own Ellesmere Port & Neston Constituency Labour Party has nominated Corbyn.
Chester Constituency Labour Party has decided not to nominate in the interests of unity.
Chris Matheson is openly supporting Owen Smith and promoted his favoured candidate when he spoke at Eddisbury Labour Party but again the nomination went to Corbyn. Mr Matheson is not making any comments to the press.
Back in June he was reported to have confronted his party leader at the Labour parliamentary party meeting where he told Corbyn he should step down.
Mr Matheson was elected with a tiny 93-seat majority in May 2015 after taking the seat from the Conservatives’ Stephen Mosley but will be worried about having to defend his marginal seat sooner rather than later as Prime Minister Theresa May might well call an early election.
The city MP, who joined the mass resignation by shadow ministers in Corbyn’s team when he stepped down as parliamentary private secretary to the shadow justice team, was widely quoted as having spoken out in front of more than 200 Labour colleagues.
He is reported to have told Corbyn: “I’ve done something you’ve never done, and that’s beaten the Tories.”
Mr Matheson was also supposed to have told his leader that he agreed with him on many of his policies, ‘but you’ve got to go’.
One local MP who is supporting Corbyn is shadow cabinet member Margaret Greenwood (Wirral West) who spoke at a pro-Corbyn rally in Ellesmere Port last month. Another high profile Corbynista on the platform that night was Cheshire’s Labour Police and Crime Commissioner David Keane.
Local Labour Party constituencies supporting Corbyn are: Ellesmere Port and Neston, Wirral West, Wirral South, Alyn & Deeside, Delyn, Weaver Vale, Eddisbury, Crewe & Nantwich, Congleton and Macclesfield.
The following constituency parties are supporting Owen Smith: Warrington South and Wrexham.