How to Influence Policy Makers and Decision Makers: A Practical Guide for Advocates

Here’s something that surprises a lot of people new to advocacy: the most important work rarely happens in a formal meeting, a packed public gallery, or a polished written submission.

It happens in the conversations before all of that.

Influencing policy makers and decision makers is fundamentally about relationships – real, sustained, trust-based ones that mean your voice carries weight when it matters most. You don’t need to be a political insider or have a rolodex full of Ministers’ numbers. You need to be intentional, consistent, and genuinely useful to the people whose decisions affect the issues you care about.

Here’s how to do it.

Start by Understanding Who Actually Makes Decisions

One of the most common mistakes advocates make is targeting the wrong people. Influence in any institution is rarely concentrated in one person – it’s distributed across a web of advisers, senior staff, and internal processes.

Before you can influence a decision, map it. Who has formal decision-making authority? Who influences that person? Who controls the flow of information – the chief of staff, the policy officer, the parliamentary researcher? Sometimes the most powerful thing you can do is win over a senior adviser who will brief the decision maker on your behalf.

Build Relationships Before You Need Them

This is the golden rule of advocacy – and the one most frequently ignored.

Many organisations only reach out to decision makers when they need something. The problem is that by that point, you’re a stranger asking a favour. A cold ask from an unfamiliar organisation doesn’t carry much weight.

Contrast that with the advocate who has been in regular contact for two years – attending relevant events, sharing useful research, demonstrating genuine expertise. When that person asks for a meeting, it gets scheduled.

Practical ways to start:

• Attend party conferences, sector events, and public consultations – you don’t need a formal meeting to introduce yourself
• Send proactive briefings with no ask attached – just useful information
• Respond to consultations – a well-crafted submission puts you on record and can lead to direct engagement
• Invite, don’t just request – site visits, roundtables, and community events shift the dynamic in your favour

Know What Decision Makers Actually Need

Effective advocacy isn’t about telling decision makers what you think they should care about. It’s about understanding what they’re trying to achieve – and showing how your ask aligns with that.

Every decision maker is operating under pressure: political priorities, budget constraints, competing voices. Ask yourself: what is this person trying to achieve right now? What would make my ask easy to say yes to? What objections are they likely to have?

A housing charity, for example, will get further framing their work around a council’s own targets – reducing homelessness figures, saving money on emergency accommodation – than leading with their mission statement. That’s not manipulation. It’s speaking their language.

Make Your Ask Specific and Actionable

Vague advocacy gets vague results. Before any interaction, be clear about what you’re asking for: one primary ask, a concrete action (not “raise awareness” but “include this amendment in the Bill”), and a realistic timeline. Make it easy for them to say yes.

Use Evidence – But Don’t Lead With It

Data matters, but decision makers aren’t won over by statistics alone. The most persuasive advocacy weaves together three things: data that demonstrates scale or urgency, a story from someone with lived experience, and a credible solution. Lead with the human story to create connection, use data to validate, and close with a clear ask. That sequence sticks.

Be a Trusted Source, Not Just a Campaigner

The advocates with the most sustained influence are those who become genuinely useful to decision makers – honest, accurate, willing to acknowledge complexity even when the evidence is mixed. Decision makers talk to each other. A reputation for straight-talking, good-faith engagement travels fast in policy circles. So does a reputation for exaggeration.

The Long Game

Most significant policy changes don’t happen after one meeting or one campaign. They happen after years of consistent, strategic engagement that gradually shifts the landscape.

The organisations that have the most impact are the ones who show up consistently, build trust genuinely, and stay in the room even when progress is slow. Every conversation, briefing, and event is a deposit in a long-term relationship bank — and when the moment comes, that investment pays off.

Ready to develop your advocacy and influencing skills? Our training programmes cover stakeholder mapping, building a strategy, policy argument development, and coalition building. Our course is offered across varied time zones and to charities with varying campaign needs. Find out more and register your interest here: https://govcentre.org/course/advocacy-courses/