Lake Research Partners/The Tarrance Group is rated Least biased with Mostly Factual factual reporting by Media Bias Fact Check.
LEAST BIASED
These sources have minimal bias and use very few loaded words (wording that attempts to influence an audience by appeals to emotion or stereotypes). The reporting is factual and usually sourced. These are the most credible media sources. See all Least Biased Sources.
- Overall, we rate Lake Research Partners/The Tarrance Group as Least Biased based on polling that minimally favors the left. We also rate them as High Factual pollsters based on a B- rating in predictive polling.
Detailed Report
Bias Rating: LEAST BIASED (-1.4)
Factual Reporting: MOSTLY FACTUAL (4.0)
Country: USA
MBFC’s Country Freedom Rating: MOSTLY FREE
Media Type: Organization/Foundation
Traffic/Popularity: Minimal Traffic
MBFC Credibility Rating: MEDIUM CREDIBILITY
History
Lake Research Partners/The Tarrance Group is a market research company based in Washington, DC. According to their about page, “Lake Research Partners is a national public opinion and political strategy research firm founded by Celinda Lake in 1995, and the most consistently accurate—and consistently progressive—Democratic research firm in the country.”
Read our profile on the United States media and government.
Funded by / Ownership
Lake Research Partners/The Tarrance Group is a private for-profit company. Its revenue is derived from service sales.
Analysis / Bias
Lake Research Partners/The Tarrance Group conducts market research and polling via various mediums. The website does not generally report on politics but does report news on its polls. It also works exclusively with progressive clients. This review is reflective of the polling partnership between Lake Research Partners and The Tarrance Group. Lake Research Partners polling and advocacy favor the left.
Polling bias is assessed using Silver Bulletin’s mean-reverted bias metric. For Lake Research, the mean-reverted polling bias is −0.65, indicating a slight Democratic lean. Under MBFC’s calibrated polling bias scale, a mean bias between -0.6 and -1.0 corresponds to a polling bias score of -2. Polling bias accounts for 70% of the final bias score, while editorial bias accounts for 30%.
Applying MBFC’s weighted formula:
(−2 × 0.70) + (−0 × 0.30) = −1.4
Based on MBFC’s bias classification scale, a final score of -1.4 places Lake Research in the Least Biased category.
Factual reporting is rated Mostly Factual based on a Silver Bulletin grade of B-, indicating average predictive accuracy and fair methodological performance.
Failed Fact Checks
- None to date
Overall, we rate Lake Research Partners/The Tarrance Group as Least Biased based on polling that minimally favors the left. We also rate them as High Factual pollsters based on a B- rating in predictive polling. (D. Van Zandt 10/26/2024) Updated (02/19/2026)
Source: https://www.lakeresearch.com/
Last Updated on February 19, 2026 by Media Bias Fact Check
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