Every election season, Ghanaians are flooded with poll results. One firm says Candidate A is ahead by 10 points. Another says the race is tightening. Social media erupts with claims that the polls are rigged, or that they are the only truth in a sea of political noise.
But what do political polls actually measure? And what should ordinary Ghanaians understand before treating any poll as gospel? The answers lie not in the headline numbers, but in the methodology behind them—the sample, the questions, the timing, and the margin of error.
Quick Facts
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What a poll is: A survey of a sample of people designed to estimate the opinions of a larger population.
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Ghana’s main pollsters: Global InfoAnalytics, Afrobarometer (through CDD-Ghana), and occasional academic surveys.
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Typical sample size: Afrobarometer uses 2,400 respondents for a ±2% margin of error at 95% confidence .
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Margin of error: A poll showing 52% vs 48% with a ±3% margin means the race is statistically tied .
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Key limitation: Polls measure opinion at a moment in time. They do not predict what will happen on election day.
What a Poll Actually Measures
A political poll is a survey. It asks a sample of people what they think, and then uses statistical methods to estimate what the larger population thinks.
The logic is simple: if you randomly select enough people from a population, their collective answers should approximate what the whole population would say. This is why pollsters talk about representative samples—groups that reflect the demographic makeup of the country in terms of region, urban-rural split, gender, age, and education .
Afrobarometer, one of the most respected survey networks in Africa, uses a nationally representative sample of 2,400 adult Ghanaians. This yields country-level results with a margin of error of ±2 percentage points at a 95% confidence level . That means if 50% of respondents say they support a candidate, the true figure in the population is likely between 48% and 52%.
But this precision comes with conditions. The sample must be drawn randomly, the questions must be neutral, and the fieldwork must be conducted properly.
The Margin of Error: The Number Everyone Ignores
The margin of error is the most misunderstood number in polling. It is not a measure of how “wrong” a poll is. It is a measure of uncertainty.
If a poll has a ±3% margin of error and shows Candidate A at 52% and Candidate B at 48%, the race is statistically tied. Candidate A’s true support could be as low as 49% or as high as 55%. Candidate B’s could be as low as 45% or as high as 51%. The two ranges overlap .
Many Ghanaians look at a poll showing one candidate ahead and treat it as a prediction. But a lead within the margin of error is not a lead at all. It is a coin toss.
The Difference Between “Percentage” and “Percentage Points”
This is a subtle but important distinction. If a candidate’s support rises from 40% to 45%, that is a 5 percentage point increase. But it is a 12.5% increase in relative terms (5 is 12.5% of 40).
Pollsters and journalists often conflate these terms. When you see a headline saying “Candidate X’s support jumped 5%,” you need to check whether the article means percentage points or a relative percentage. The difference matters for understanding the real shift in opinion .
What Polls Get Wrong
Polls are not predictions. They are snapshots. And like any snapshot, they can be blurry.
Timing matters. A poll conducted weeks before an election captures opinion at that moment. Voters can change their minds. Events can intervene. In 2001, Australian pollster Gary Morgan argued that the electorate shifted dramatically in the final week of the campaign, invalidating earlier predictions. In Ghana, the Ayawaso East NDC primary in 2026 saw a pollster’s projection fail because delegate inducements—vote buying—shifted the outcome in ways the model did not capture .
Method matters. Telephone polls may exclude people who cannot afford phones. Street interviews may overrepresent people who are in public spaces. Face-to-face interviews may reduce social desirability bias but are more expensive and slower . Prof. Akpeko Agbevade of the University of Ghana has noted that relying on telephone calls and street interviews can distort findings and misrepresent the wider population .
Question framing matters. How a question is worded can influence the answer. Do you support economic reforms to improve growth?” will produce a different response than “Do you support reforms that may increase taxes and the cost of living?”—even if both refer to the same policy .
The Ghanaian Experience: Polls, Prophecies and Vote Buying
Ghana’s political polling landscape is particularly contentious. Global InfoAnalytics, led by Mussa Dankwah, has gained prominence for predictions that sometimes hit close to the mark—and sometimes miss badly.
In the 2024 general election, Dankwah predicted the NPP’s Mahamudu Bawumia would secure 41% of the vote. The result closely mirrored his projection, earning him credibility with some . But in the 2026 Ayawaso East NDC primary, his model projected Hajia Amina Adam to win with about 54%. She polled 41%. Baba Jamal Ahmed, projected at no more than 38%, won with 45% .
Dankwah attributed the miss to vote buying. “It took bribes to defeat science and data,” he wrote .
This admission highlights a fundamental challenge: polls measure stated preferences. They do not account for the impact of cash handouts, delegate inducements, or the gap between what people tell a pollster and how they actually behave in a voting booth.
The debate in Ghana is not just about methodology. It is also about credibility. Critics have questioned Global InfoAnalytics’s sample sizes—reportedly nearly 17,000 respondents in three months—and the lack of publicly available raw data . Politicians from both major parties have dismissed polls when the results do not favour them .
How to Read a Poll Like a Journalist
When you see a poll result, ask five questions:
Who conducted it? A poll from Afrobarometer, with its transparent methodology and pan-African network, carries different weight than a poll from a firm with no published methodology .
What is the sample size and margin of error? A poll of 1,000 people has a larger margin of error than one of 2,400. A lead within the margin is not a lead.
When was it conducted? A poll from last month may not reflect opinion today. Timing matters, especially in volatile political moments.
How was it conducted? Face-to-face, telephone, or online? Each method has biases .
What is the question? Look at the exact wording. Framing can shape responses .
Frequently Asked Questions
What is a political poll in simple terms?
It is a survey of a sample of people used to estimate what a larger population thinks about a candidate, party, or issue.
What does margin of error mean?
It is the range of uncertainty around a poll result. A ±3% margin of error means the true figure could be 3 percentage points higher or lower than the reported number.
Why do polls sometimes get it wrong?
Because they measure opinion at a moment in time, not future behaviour. People change their minds. Vote buying can distort outcomes. Methodological flaws can introduce bias.
Is a poll with a 5-point lead reliable?
Not if the margin of error is ±3%. A 5-point lead is outside the margin, but a 3-point lead is not. Check the margin before drawing conclusions.
Why do Ghanaian politicians criticise polls?
Often because the results do not favour them. Polls are used strategically by campaigns to build momentum or dismiss opponents’ chances.
What is the difference between a poll and a prophecy?
A poll is based on a sample of respondents and transparent methodology. A prophecy is based on spiritual revelation. Polls offer probability with margins of error; prophecies claim certainty without evidence .
Can polls influence how people vote?
Yes. The “bandwagon effect” suggests some voters support candidates who appear to be winning. Polls can also demoralise supporters of candidates shown to be trailing.
What should I look for in a credible poll?
Transparent methodology, a representative sample, a stated margin of error, clear question wording, and disclosure of who commissioned and funded the survey.
What to Remember
Political polls are not crystal balls. They are tools for understanding public opinion at a specific moment. They come with uncertainty, and that uncertainty is measured by the margin of error.
A credible poll has a representative sample, transparent methodology, and neutral questions. A poll without these things is not evidence—it is marketing.
In Ghana, polls have become part of the political battlefield. Some have been accurate. Some have been wrong. Some have been accused of being tools for narrative construction rather than measurement .
The next time you see a poll, do not ask “Who is winning?” Ask “Who conducted this, how, and what does the margin of error say?” The answers will tell you more about the poll’s reliability than the headline number ever could.
Source: Accra Street Journal
Samuel Kwame Boadu is a Ghanaian media entrepreneur and storyteller with a passion for amplifying urban voices and uncovering everyday truths. He is the Editor-in-Chief and Founder of The Accra Daily Mail, a dynamic digital platform dedicated to capturing the pulse of Ghana’s capital—its people, culture, challenges, business, sports and innovations.
