Massive Caller

Massive Caller is a Mexican polling and consulting firm headquartered in Nuevo León. Founded in 2016 by Carlos Campos Riojas, a former Monterrey city councilor for the National Action Party (PAN), the company specializes in automated telephone surveys. Its proprietary robotic system launches thousands of pre-recorded calls to landlines, allowing respondents to answer questions using their telephone keypad. The company claims this method eliminates human bias and achieves 95% effectiveness in the information obtained. Massive Caller conducts polls on a wide range of topics, including Mexican domestic politics (presidential, gubernatorial, senatorial, and mayoral races), international elections (Brazil, France, Colombia, Guatemala, Cuba), and general market research. Its website features highlighted surveys such as the 2024 Mexican presidential election, various state elections, and approval rankings for governors and mayors. The firm positions itself as a fast, reliable, and low-cost alternative for measuring public opinion. Despite its claims, Massive Caller has faced significant criticism and controversy. Its methodology has been questioned for lacking a probabilistic sampling frame, which critics argue makes its results non-representative. In the 2021 elections, the firm had to apologize for inaccurate predictions in Sonora, San Luis Potosí, and Baja California Sur. During the 2024 presidential election, Massive Caller was the only pollster to consistently show opposition candidate Xóchitl Gálvez leading Claudia Sheinbaum, publishing a final pre-election poll with Gálvez at 44.6% and Sheinbaum at 42.5%, and an exit poll showing Gálvez winning 47.6% to 45.1%. The official results were drastically different, with Sheinbaum winning 59.75% to Gálvez's 27.45%. The day after the election, director Carlos Campos admitted significant methodological errors, stating "we measured poorly" and promising to correct course. Massive Caller remains an active player in the Mexican polling industry, though its reputation has been marred by these high-profile inaccuracies. The company continues to publish surveys on its website and social media channels.

Massive Caller was founded in 2016 by Carlos Campos Riojas, a former city councilor in Monterrey for the National Action Party (PAN). The company was established as a polling and consulting firm based in Nuevo León, Mexico, with a focus on automated telephone surveys. Its core innovation was a robotic system capable of launching thousands of pre-recorded calls to households with landlines, allowing respondents to answer questions using their telephone keypad. This approach was marketed as eliminating human bias and enabling fast, low-cost, and reliable measurement of public opinion. In its early years, Massive Caller built a reputation for frequent and rapid polling on Mexican political races, including presidential, gubernatorial, and legislative elections. The firm expanded its coverage to international elections in countries such as Brazil, France, Colombia, Guatemala, and Cuba, as well as to market research. Its website became a platform for publishing highlighted surveys, including approval rankings for governors and mayors. However, the firm's methodology and accuracy came under scrutiny. In the 2021 Mexican elections, Massive Caller had to apologize for inaccurate predictions in the states of Sonora, San Luis Potosí, and Baja California Sur. Critics pointed to the lack of a probabilistic sampling frame, arguing that its results could not be considered representative of the population. The most significant controversy arose during the 2024 Mexican presidential election. Massive Caller was the only major pollster to consistently show opposition candidate Xóchitl Gálvez leading Claudia Sheinbaum. Its final pre-election poll gave Gálvez 44.6% and Sheinbaum 42.5%, and on election day it published an exit poll showing Gálvez winning with 47.6% to Sheinbaum's 45.1%. The official results were overwhelmingly in favor of Sheinbaum, who won with 59.75% to Gálvez's 27.45%, and her coalition secured majorities in both legislative chambers and seven of nine states. The day after the election, director Carlos Campos admitted significant errors, stating "we measured poorly" and promising to correct the firm's methodology. Despite these controversies, Massive Caller remains active, continuing to publish surveys and maintain a presence on social media. The firm's history reflects both the opportunities and pitfalls of automated polling in a rapidly evolving media and political landscape.

• 2024

  Massive Caller's polls show opposition candidate Xóchitl Gálvez leading, contradicting most other pollsters; official results show Claudia Sheinbaum winning by a wide margin.

• 2024

  Director Carlos Campos admits 'we measured poorly' and promises to correct methodology.

• 2021

  Firm apologizes for inaccurate election predictions in Sonora, San Luis Potosí, and Baja California Sur.

• 2016

  Massive Caller founded by Carlos Campos Riojas in Nuevo León, Mexico.

Fast, reliable, and low-cost public opinion measurement using robotic telephone surveys.

• Automated telephone surveys

  Robotic system that launches thousands of pre-recorded calls to landlines; respondents answer via telephone keypad.

• Electoral polls

  Polls on presidential, gubernatorial, senatorial, and mayoral races in Mexico and internationally.

• Approval rankings

  Rankings of governors and mayors based on public opinion surveys.

• Inaccurate 2021 election predictions

• 2024 presidential election polling controversy

Read more

• Admission of methodological errorsOther

1. 1Massive Caller official websitemassivecaller.com
2. 2Massive Caller - Wikidatawikidata.org
3. 3Massive Caller - Wikipedia (Spanish)es.wikipedia.org