Are Exit Polls Accurate? How it is different than Election Results, Check Here

Exit polls have become an essential part of the modern electoral process. The data can provide early insights into election outcomes before the official vote count is announced. Exit polls are conducted by asking voters who they voted for as they leave the polling booth, with the aim of predicting election results. Due to the embargo period set by the Election Commission, exit polls for the 2024 Lok Sabha elections will begin at 6:30 pm on June 1. Apart from the Lok Sabha elections, assembly elections are also held in Andhra Pradesh, Arunachal Pradesh, Odisha and Sikkim. However, the question remains: How accurate are exit polls?

What factors affect the accuracy of exit polls?

Several factors can affect the accuracy of exit polls:

  • Sampling error: If the sample of polling stations or voters is not completely representative, the results may be skewed. Although sampling techniques are advanced, it is still challenging to achieve complete accuracy.
  • Nonresponse bias: Not all voters agree to participate in exit polls, and voters who refuse to participate may have different voting patterns than voters who do participate. This can lead to bias.
  • Social desirability bias: Voters may not always report their votes truthfully, especially in politically sensitive or polarized environments. This can skew the results.
  • Time and logistics: The efficiency and timing of data collection can affect accuracy. Delays in data transmission or logistical issues can result in incomplete or incorrect data for analysis.

How do exit polls perform historically?

Historically, exit polls have varied in their accuracy. In some elections, the polls have predicted the outcome very accurately, while in other elections, the polls have deviated greatly from the final outcome. Here are some examples of exit polls from past Lok Sabha elections.

2019 Exit Polls: Exit poll forecasts should never be trusted blindly as there is always a chance they could be wrong. There have been several instances of exit polls being inaccurate in recent years. However, in 2019 and 2014, the exit poll forecasts successfully captured the overall mood of the country.

In 2019, the average exit poll predicted that the NDA would win 306 seats and the UPA 120. These predictions underestimated the actual results, with the NDA winning 352 seats (the BJP won 303 seats) and the UPA winning 93 seats (the Congress won 52 seats).

Voting Type

Voting body

Confidentiality Agreement

United Progressive Alliance

others

most

Exit polls

India Today Axis

352±13

93±15

82±13

70±13

Exit polls

News24-Chanakya Today

350±14

95±9

97±11

68±14

Exit polls

News18-Ipsos

CNN-IBN-Ipsos

336

82

124

64

Exit polls

VDP Associates

333

115

94

61

Exit polls

sudarshan news

313

121

109

41

Exit polls

Times Now-VMR

306±3

132±3

104±3

34±3

Exit polls

Suvarna News

305

124

102

33

Exit polls

Indian TV – CNX

300±10

120±5

122±6

28±10

Exit polls

Indian News – Polstrat

287

128

127

15

Exit polls

Voters

287

128

127

15

Exit polls

News Nation

286

122

134

14

Exit polls

Bone stem cell differentiation

277

130

135

5

Exit polls

NewsX-Neta

242

164

137

flood

Source: Wikipedia

2014 Exit Polls: In 2014, the BJP-led National Democratic Alliance won a landslide victory, and although many exit polls predicted the NDA win, they did not fully anticipate it. They underestimated the size of the victory. On average, the eight exit polls predicted that the NDA would win 283 seats and the UPA would win 105 seats. In reality, the NDA won 336 seats, the BJP won 282 seats, while the UPA won 60 seats and the Congress won 44 seats.

release date

Voting body

Confidentiality Agreement

United Progressive Alliance

other

May 12, 2014

CNN-IBN – CSDS – Lockneti

276

97

148

May 12, 2014

India Today – Cicero

272

115

156

May 12, 2014

News 24 – Chanakya

340

70

133

May 12, 2014

Times Now – ORG

249

148

146

May 12, 2014

ABP News – Nielsen

274

97

165

May 12, 2014

Indian TV – CVoter

289

101

148

May 14, 2014

NDTV – Hansa Research

279

103

161

May 14, 2014

CNN-IBN – CSDS

280

97

148

May 12, 2014

Polls

283

105

149

Source: Wikipedia

How do exit polls differ from election results?

Exit polls and election results have different purposes and are derived using different methods. Here are some of the key differences between the two:

aspect

Exit Polls

Election Results

timing

Immediately after voters leave the polling station

Final results will be announced after vote counting is complete

method

Based on surveys that ask voters how they vote

Actual vote count

predict

Predicting possible outcomes based on survey data

Reflect the actual results based on the number of votes

accuracy

Subject to sampling error, non-response bias, and methodological limitations

The decision is final unless there is any violation or dispute

Impact on voters

If the results are announced before the polls close, it could affect voter behavior

No impact as they are published after the voting period

Available now

Available after polling stations close

Available once all votes have been counted and results certified

Used for

Media coverage, political analysis and public interest

Official results determination, analysis and historical data

Exit polls are a valuable tool for measuring election trends and providing early insights into election results. While exit polls have their limitations, they tend to be a fairly accurate gauge of voter sentiment. However, both the public and the media must interpret exit poll results with caution, understanding that they are estimates, not final results.

Read | What are exit polls? How are they conducted? How can you prepare?