Fastpath: Admin Console: Ideas > Idea Settings >
You can set the number of points that an idea vote is worth. Note that changing this
setting after there are already ideas in the community will adjust scores for existing
To set the number of points:
In the admin console, on the General page for configuring Ideas, enter the
number of points that should be awarded for promoting or demoting an idea.
Demoting an idea always removes the number of points you specify, so you don't
need to add a minus sign to make it a negative number.