Patrick Hurley MP says critics of the regeneration scheme are in the minority.
Sefton councillor Helen Duerden, who represented Netherton North Ward, died suddenly on Thursday.
Sefton Council is facing legal action from a campaign group which wants the Southport aviary to remain open.
Southport's Civic Society said it would object to the revamp of the gardens over heritage concerns.
The service provides non-medical support to patients diagnosed with cancer in Southport and Formby.
Paul Curtis says the mural "brings a little bit of positivity to the area".
The annual air pageant runs 10:00 BST to 17:00 each day subject to weather conditions.
Sefton MP Bill Esterson said a new health centre for the area was "long-awaited".
A vet speaks out in support of the campaign to save an aviary earmarked for closure in March.
