For every issue, there are stakeholders that are either with you, against you, or somewhere in between. In public policy advocacy work moving an opponent into a neutral space may be as valuable as moving an ally closer to you.
Categorization
Leading Allies: You need to actively support them, nurture them, encourage them, provide feedback to them
Active Allies: They agree with you and are fighting alongside with you. You need to identify them, contact them and empower them.