Election Polls Missed the Mark Again, Raising Questions About Reliability

Recent Israeli elections once again highlighted the significant discrepancies between pre-election polls and the actual results, prompting widespread discussion about the reliability of political forecasting. For years, weekly polls have been a ritual for many Israelis, shaping the public discourse even outside of active election campaigns. As the 2026 Knesset race began, pollsters released data almost daily, with most indicating a lead for the "change bloc" over the coalition bloc, positioning Gadi Eisenkot's "Yashr" party as the largest, and leaving Benjamin Netanyahu's Likud party behind. While some polls, notably from Channel 14 and i24, showed an advantage for Netanyahu's bloc, the prevailing impression was of a stronger position for the change bloc.

However, election night revealed a different picture. Initial exit polls from major news outlets showed a slight lead for the change bloc, but the Likud had already regained its position as the largest party. By the end of the night, updated polls showed the Likud surging, with Netanyahu's bloc opening a significant gap over the change bloc. Notably, Arab parties collectively received 19 mandates, far exceeding predictions. This recurring pattern has led to the day after elections being dubbed the "Yom Kippur of pollsters," forcing them to explain their failures.

Experts point to several potential reasons for these inaccuracies. Questions are being raised about whether research institutes use sufficiently refreshed, fixed panels, whether the samples truly represent the public, or if respondents are not providing truthful answers. The analysis and translation of responses into mandates are also under scrutiny. In an era of advanced technology capable of collecting vast amounts of data, the potential for data manipulation and presentation bias is a concern. This raises the question of whether polls remain a professional tool or have devolved into a media entertainment that generates headlines and ratings.

Beyond politics, businesses and organizations rely heavily on market research and business surveys for crucial financial decisions, such as product launches or market entry. Errors in market research can lead to substantial financial losses, making the accuracy of polling methods a critical issue. The article explores whether the same methodologies that struggle to predict voter behavior can reliably inform consumer behavior, or if these are distinct fields of research.

Polls are designed to gauge voting intentions at a specific moment, not to predict outcomes, as voter preferences can change significantly before election day. The methodology often involves online panels, where participants are incentivized with vouchers. Some institutes also use telephone surveys to reach harder-to-sample demographics. A typical poll might survey 500-600 individuals, but accuracy depends on the sample's representativeness across age, gender, and location. Statistical weighting is used to correct imbalances, but each institute employs its own methods, leading to variations in results. Small shifts in responses can dramatically impact the outcome, especially for smaller parties near the electoral threshold.

Factors like sampling error, respondents concealing their true intentions, and differing turnout rates among various groups contribute to inaccuracies. Dr. Omer Yariv from Reichman University's Center for Liberty and Responsibility notes that conservative Likud voters may be more inclined to participate in polls conducted by certain pollsters, potentially skewing results. He also points to unexpected high turnout among Arab voters and the influence of external factors, like US political endorsements, as reasons for miscalculations regarding Arab party mandates. The article also touches upon the role of "PolyMarket," a platform where individuals bet on future events, noting that its predictions are influenced by polls and can also be misleading.