Influence mapping

Influence mapping is a technique for plotting the people around a decision by how much say they hold and how much they care about the outcome. It maps the room and its politics; impact mapping maps the route to a business result.

The output is usually a grid with two axes: power on one, interest on the other. Everyone with a stake lands in one of four boxes, and the box sets how you deal with them.

Plotting people sounds cynical. It is the opposite — it stops you spending equal effort on everyone and then being blocked by the one person nobody briefed.

Key takeaways

• Two axes: how much power someone holds, and how much interest they have.
• Four boxes set the handling: manage closely, keep satisfied, keep informed, monitor.
• Influence mapping plots people; impact mapping plots goals, actors and candidate deliverables.
• A map is a snapshot — redraw it when the sponsor, the budget or the org chart changes.

How it works

You list every person or group touched by the decision, score each on power and interest, then place them on a grid. The box a stakeholder lands in decides how much attention they get, and in what form.

Power is formal authority plus the informal kind. An organizational structure gives you the first, while the second is about who gets listened to, and it rarely matches the chart.

Federal procurement shows how explicit this can get. Under the Federal Acquisition Regulation the contracting officer is designated as the source selection authority unless the agency head appoints someone else.

A tailored evaluation team of contracting, legal, logistics and technical specialists advises. It does not decide. That split — advisers on one side, the authority on the other — is what an influence map makes visible inside a company.

Mapping interest also tells you where consultation is honest. The Environmental Protection Agency’s public participation guide warns that broad questions raise expectations and direct input toward areas where no influence is actually possible.

Scoring is deliberately coarse. High or low on each axis is enough, because arguing about whether somebody rates a seven or an eight burns the hour you should spend deciding what to do about them.

Keep the finished grid private. A document labelling a named executive as low interest will leak eventually, so most teams hold the map as a working artefact and circulate only the engagement plan it produces.

The finished grid is an input to decision-making, never a substitute for it. It tells you whose agreement the decision needs; it does not tell you whether the decision is any good.

Examples

Influence maps earn their keep whenever a decision needs more than one signature. Three settings show the pattern: an outsourcing transition, a regulated procurement and an internal restructure.

An outsourcing transition. A UK insurer moving claims administration to Manila finds the operations director holds high power and high interest, while the works council has little formal power and intense interest.

The group finance director barely engages until month nine, then arrives with a question about run rate that nobody has prepared for. A map drawn in month one would have put that person in the keep satisfied box.

A regulated procurement. Hospital groups buying clinical software must satisfy clinicians, information governance officers and a procurement board with different scoring weights. The map shows which objections are advisory and which amount to a veto.

An internal restructure. When a retailer merges two regional teams, the loudest voices are rarely the decisive ones. Plot them and the quiet regional manager holding budget authority moves ahead of the vocal team lead on the briefing list.

The grid is not mind mapping, which branches one idea outward to aid recall rather than ranking anybody. Nor is it process mapping, which charts how work flows while an influence map charts who can halt it.

Competency mapping is the third near neighbour. It records what people are able to do, where an influence map records what they are able to block.

The common thread across the three settings is timing. Every one of those maps is worth more in week one than in month nine, because by month nine the positions have hardened into a decision nobody can reopen cheaply.

A second pass after the first gate is usually the revealing one. People who scored low on interest become extremely interested the moment a budget line appears with their name beside it.

Related terms

• Organizational conflict: the friction a map predicts, once two boxes want opposite outcomes.
• Organizational culture: shapes whose informal influence outranks the formal chart.
• Decision-making: the act the map feeds; mapping on its own decides nothing.
• Process mapping: charts how work moves through a business, not who can stop it.
• Competency mapping: records capability, where an influence map records sway.

FAQ

What two axes does an influence map use?

Power and interest. Power is how much the person can change or block the decision, and interest is how much the outcome actually matters to them.

How is influence mapping different from impact mapping?

Influence mapping plots people and their standing around a decision. Impact mapping plots a goal, the actors who could move it and the deliverables that might help, so it is a planning technique rather than a political one.

Where do the scores come from?

Judgement, gathered from several people rather than one. Ask three colleagues who have worked with the stakeholder, compare their answers, and treat any wide disagreement as a finding in its own right.

How often should you redraw the map?

At every major gate, and immediately after any change of sponsor, budget or reporting line. Positions move faster than most project teams assume.

Is an influence map the same as a stakeholder register?

No. A register lists who is involved, while the map ranks them and tells you what to do about each one.

Read the provider research and transition guides at Outsource Accelerator before you map the people who will approve your next outsourcing move.