Data Analysis for PolicyMaking in Georgia
Module 1 · The Data-Driven Policy Cycle 1.2 Why data matters in policy
Subsection 1.2

Why data matters in policy

~3 min

Reading

Policy decisions affect who gets to vote, how long they wait in line, whether their vote counts as much as their neighbor's, and whether their community has a voice in the legislature. Data does not make those decisions—people do. But data shapes what decisions appear legitimate, what claims hold up under scrutiny, and what alternatives anyone bothers to consider.

There are four concrete reasons to build your policy work around data:

1. Evidence-based decisions survive longer

A redistricting map drawn with documented demographic justification is harder to overturn than one drawn by feel. A voter-access policy supported by turnout data and wait-time analysis is more likely to survive legal and legislative challenge.

2. Data enables proactive problem-solving

Without data, advocates are reactive—they show up after a harm is visible. With data, you can spot a pattern before it becomes a crisis. For example: a county that eliminated half its polling places in 2022 may show lower turnout in 2024 even before anyone files a complaint.

3. Measurable results create accountability

If a policy goal is "increase voter registration in underregistered precincts," you need a baseline. Data gives you a starting point and a way to measure whether the intervention worked.

4. Data grounds citizen engagement

When community members can see their precinct's data, compare it to neighboring precincts, and ask questions, they move from passive recipients of policy to active participants in shaping it.

Georgia example: voter registration trends 2020–2024

Between 2020 and 2024, Georgia's active registered voter count grew from approximately 6.9 million to over 8.0 million—a gain of roughly 1.1 million registrants in four years. This growth was not uniform. Gwinnett and Fulton counties accounted for a disproportionate share of new registrations, reflecting both population growth and intensive registration drives. At the same time, several rural counties saw net registration declines—a signal worth investigating before the next redistricting cycle.

A data-driven policy analyst would ask: Where did growth happen, and where didn't it? What explains the gap? Those questions lead directly to actionable policy recommendations.

Learner action

Identify one decision in your organization's recent history that data could have strengthened. What data would you have wanted?

Georgia Active Registered Voters — Selected Counties (2020 vs 2024) Fulton 820k 948k Gwinnett 571k 663k Cobb 492k 549k DeKalb 527k 588k 2020 2024 Values are illustrative approximations based on published voter registration totals. Source: Georgia Secretary of State.
Diagram 1.2 · Georgia voter registration growth, 2020–2024. Major urban counties saw significant registration gains. Light bars = 2020; dark bars = 2024.