Sefton Central Labour MP Bill Esterson has this week launched a campaign to reunite Crosby under one constituency and he is calling on other parties in the borough to back him.
The Labour MP has drawn up plans to reunify the town which was split by the Boundary Commission at the last election.
Last month the Commission again drew up new proposals for boundary changes throughout the country.
But under the latest proposals Crosby is still split between two constituencies, with Blundellsands joining Victoria Ward and Church Ward in the Bootle Constituency. Manor goes into a proposed new constituency called Maghull.
However, Bill Esterson says this is an ideal opportunity to redraw the boundary to reunify the town under one constituency.
Bill said: "The Boundary Commission was mistaken when it redrew the Crosby boundary last time and split the town between two constituencies. It is wrong now not to take the opportunity to simply put the town back together again.
"The hard and fast rules which the Commission is forced to stick to when redrawing the boundaries this time around include keeping the constituencies around the same size with an electorate of around 76,500.
"As it works out, by working through the options for East Merseyside there is the opportunity to bring Blundellsands, Manor, Voctoria and Church Wards back together into one constituency.
"This is something I know has the support of lots of people who live in the town - and also in Waterloo - and must be the option we go with as part of the Boundary Commission's current consultation."
Bill said he was disappointed that the Liberal Democrat's alternative proposals for Sefton failed to bring the Crosby and Waterloo wards back together.
Bill said: "I was shocked that the Lib Dems don't want to reunify Crosby, but keep much of the town in the Bootle constituency.
"Since the last boundary change, the splitting of the town across two constituencies has been one of the biggest issues throughout Crosby. People continue to write to me complaining they the community has been split.
"We have the opportunity to do something about it during this latest boundary review, but the Liberal Democrats clearly don't want to see Crosby reunified."
Bill said this was an opportunity to get what many people in Crosby wanted.
Bill said: "These boundary changes are unnecessary. It is just an attempt by the Conservatives to get the boundaries redrawn in their favour.
"Under the Boundary Commission's proposals, they are already splitting Formby, which means there will be two major communities in Sefton which are torn in two.
"But if the Tories and Lib Dems in government want to continue with the boundary changes, then we must work to get the Commission to reconsider its original proposals so that we can again get Crosby reunited in one constituency."