Methodology

Methodology Center

Scientifically Proven Methodology and Rigorous Research Standards

Gallup prides itself on the integrity of its data and being transparent. We are committed to using scientifically proven and accepted methodologies for Gallup polling in more than 160 countries and areas worldwide. Gallup applies rigorous research standards to its Gallup Daily tracking, Gallup Poll Social Series, and Gallup World Poll surveys. These measures track what the public is thinking on virtually every political, economic, and social issue that matters to society.

Gallup Daily tracking is divided into two surveys: Gallup U.S. Daily and the Gallup-Healthways Well-Being Index. Gallup interviews 500 U.S. adults for each survey, 350 days per year with minimum quotas of 40% landlines and 60% cellphones. These large samples allow Gallup to examine extensive demographic breaks and unique cross-tabulations of the daily measures. The samples also allow Gallup to report results at state and community levels.

The U.S. Daily gauges Americans' opinions on and perceptions of pressing political and economic issues and current events. It includes the most up-to-date data available on presidential job approval levels as well as Americans' attitudes about the economy, employment, their companies' hiring situations, their personal finances, and their spending habits.

The Gallup-Healthways Well-Being Index includes the most precise data available on Americans' health conditions and behaviors. The Well-Being Index measures Americans' perceptions of their lives and daily experiences, capturing the interrelated elements that make up well-being, including a sense of purpose, social relationships, financial security, relationship to the community, and physical health.

The Gallup-USA Funds Daily Education Index strives to give a voice to higher education consumers by measuring the opinions, experiences and expectations of prospective, current and former students.

The Gallup Poll Social Series includes topical questions on political, economic, and social issues and several hundred long-standing Gallup trends -- some dating back to the 1930s. Gallup initiates these surveys during the same month every year and includes a survey's core trend questions in the same order each administration. Using this consistent standard allows Gallup researchers to reliably analyze changes in trend data.

The Gallup World Poll monitors the issues that matter most to societies worldwide, such as personal safety, food and shelter, employment, well-being, and confidence in national institutions. This survey is administered face to face or by telephone in more than 160 countries and areas and in over 140 languages.

In addition to our core polls, organizations worldwide turn to Gallup to conduct custom surveys using our rigorous research standards and scientifically proven methodologies to help them solve their most pressing problems.

Gallup's methodologists continuously study best practices in the field of survey research and conduct experiments to inform our methodologies. To read about the latest updates to Gallup's methodologies, check this page frequently.

Gallup Knowledge

How Does Gallup Daily Tracking Work?

How Does the Gallup U.S. Daily Work?

How Does the Gallup-Healthways Well-Being Index Work?

How Does the Gallup-USA Funds Daily Education Index Work?

How Does the Gallup Poll Social Series Work?

How Does the Gallup World Poll Work?

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