The measure offers a quick snapshot of how Americans feel about the state of the country, beyond approval of any single leader or policy.
It's a simple poll question that asks people whether they think things in the country are going well or going badly overall.
Sustained 'wrong track' readings often correlate with voter appetite for change, putting pressure on incumbents and the party in power.
Pollsters ask respondents to choose between 'right direction' and 'wrong track,' producing a simple percentage split that can be tracked over time.
Analysts compare results month to month and year to year, watching for shifts tied to economic data, major events, or changes in administration.
Results are typically broken down by party identification, since supporters of the party in power tend to view the country's direction more favorably.