Can't figure out how to submit specific data with javascript

I'm unable to figure out how to submit specific data to a Rails update()
method via the jQuery submit() method. This is the code snippet I'm
working with:

<% form_for(vote, :remote => true) do |f| %>
    <%= check_box_tag "selection", vote.id %>
<% end %>

...

<%= link_to 'Vote Yes', ballots_path, :onclick =>
"$('.edit_vote').submit()" %>
<%= link_to 'Vote No', ballots_path, :onclick =>
"$('.edit_vote').submit()" %>

How do I use the jQuery submit method to submit specific data to the
Vote controller update method? (for example if I press "Vote Yes" then
it submits ":approval => true" so that I can use params[:approval] to
update the particular vote)

Am I even on the right track?