Sefton Central Labour MP Bill Esterson and Molyneux Ward Labour Councillor Tony Carr have met with residents who have launched a campaign to oppose plans to bring a new betting shop to Liverpool Road South - just yards from a rival shop.
Residents living near to the site have launched a petition to oppose Ladbrokes' plans to bring a new shop to the road.
William Hill already runs a betting shop on the other side of the road.
Locals say there is already a problem with punters parking their cars inconsiderately while placing bets.
They are encouraging other residents to add their names to the petition.
Molyneux Ward Labour Councillor Tony Carr has endorsed the petition which gives the residents the chance to speak at the planning committee meeting when the application goes before Sefton.
Cllr Carr said: "I was approached by the residents on and around Liverpool Road South with their concerns about the plans for a new betting shop directly opposite the current one.
"They have a number of concerns which they want to present to Sefton Council's Planning Committee, so I was more than happy to put my name to the petition as ward councillor so they can speak at the meeting.
"The number of names on the petition is growing by the day which goes to show the level of local feeling on this issue."
Sefton Central Labour MP Bill Esterson said he was concerned that two betting shops would be sited within a small run of shops.
Bill said: “It isn't right that in a stretch of just 10 or so shops, two of those would be betting shops.
”This isn't healthy for the wider community. I have grave concerns about this type of shop dominating our shopping centres and communities.
“There is also potential for disruption to traffic and parking if this application is approved.”