Polling giant Gallup is changing its daily presidential approval tracking poll and shifting to a weekly metric, the firm announced Wednesday.
Gallup will shift to a weekly model in order to accommodate a different polling method the firm uses for its privately-supported daily health survey. Gallup’s Well-Being surveys will now be conducted primarily by mail, the firm said.
“We are making this change largely because the source for these daily data, the Gallup Daily tracking program — made possible by a client-supported commitment to daily interviewing on a wide variety of well-being metrics — is shifting from telephone surveys to reporting mail surveys on a monthly basis,” Gallup said in a statement.
The firm won’t dispense entirely with phone surveys, but the sample size for those polls will also be reduced considerably as the researchers switch to the new method.
“Gallup remains committed to tracking presidential approval using probability-based, telephone interviewing, but is reducing the sample size from 3,500 to 1,500 U.S. adults per week,” Gallup said. “As a result, Gallup will aggregate and report presidential job approval each week, rather than daily, beginning on Jan. 8 at 1 p.m. ET.”
The announcement comes just as President Donald Trump receive the highest approval rating since September. The most recent data shows Trump with 40 percent approval, and 55 percent disapproval, in its December 30 results.
The daily tracking program started in 2008, combining two programs, the Well-Being survey in partnership with Sharecare, and the U.S. Daily survey, which tracked national and state-level politics. The two surveys collected 1,000 responses each day, excluding holidays, since 2008.
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