So one option would be to create a gallery view (like you have) that you share (hiding any fields you don’t want visible to people using the form).
Have that gallery view be the starting place for people that you want to have use the form - they can browse the options there.
Create a field that shows at the bottom of each gallery record called “Vote for this person” or somesuch. Have that field be a formula field that concatenates the voting form share url with properly formatted “pre-fill” parameters for the person in the person field.
The flow here for users is - browse gallery; when choice is made, click on link in that person’s gallery card to vote for them; this opens the form and pre-fills the “Speaker” or “Person” Field (whatever you have it called) with the person they clicked the link from.
Here’s a reference for pre-filling form parameters in the URL:
I’d show you an example where I do the same kind of thing, but I’m on my phone.