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The wall has consistently been unpopular, with voters opposed by around a 20-point margin over months of national surveys. That makes it even less popular than the president himself.
Support for the wall is closely tied to support for the president, though. Over all, polls show it consistently tracks just a few points beneath the president’s approval rating, and support for the wall is almost exclusively confined to voters who already support the president.
In New York Times Upshot/Siena College polls of eight battleground congressional districts this past fall, 89 percent of voters’ views on the president and the wall were aligned, more than any other issues.