As the heavily mutated Omicron variant starts to spread across the U.S., more Donald Trump voters now say they oppose officials “encouraging” Americans to get vaccinated than say they support such encouragement, according to a new Yahoo News/YouGov poll.

That’s a sharp reversal from earlier this fall, when 2020 Trump voters favored a policy of vaccine encouragement by a nearly 20-point margin — and a worrisome sign of declining trust in COVID-19 vaccination among conservatives at a time when public health officials say all adults should be scheduling their booster shots.

Anti-vaccine protesters outside the San Diego Unified School District office on Sept. 28. (Sandy Huffaker/Getty Images)

In September, Trump voters largely