Wellington could be set to miss out when recommendations to alter the Taunton Deane constituency are submitted later this year.
The Boundary Commission are carrying out a review into the areas that elect MPs, and will recommend changes to some of those areas to Parliament in June.
The Taunton Deane constituency, whose MP is Rebecca Pow, could be stripped of Milverton, Langford Budville, Wiveliscombe and Cotford St Luke, which will join a new constituency named Tiverton and Minehead.
The changes would see Taunton and Wellington remain as the only communities of size in Ms Pow's new constituency.
Ms Pow has made repeated representations to the commission that her new constituency should have Wellington represented in its name, and be called 'Taunton and Wellinton.'
The MP has been joined in the effort by her Liberal Democrat rival, Gideon Amos, who also wrote to the commission in a bid to see Wellington feature in the new name.
However, it is now believed that appeals by politicians and the public have not convinced the commission, which is understood to be recommending to Parliament that the new constituency be named 'Taunton'.
A source close to the process believes that when the commission makes its recommendations to Parliament later this year, Wellington will miss out.
In a statement the Boundary Commission would not confirm the new constituency name until it had laid its plans before Parliament. A spokesperson said: "The Commission consulted on its revised proposals for new Parliamentary constituencies in the latter part of 2022.
"It is currently in the process of considering those representations and making its final decisions. We are on track to provide our final recommendations to the Speaker of the House of Commons by 1 July 2023. Once they have been laid before Parliament we will publish our final recommendations.
"Therefore, at present we have not published our final recommendations for new Parliamentary constituencies in England.