Analysis: The vast majority of Republicans don't want a booster

The poll asked fully vaccinated Americans whether they definitely would, probably would, probably would not or would definitely not get the booster.

Just 40% of all adults said they definitely would or already had received a booster.

Combined and unrounded, 53% of all adults said they would likely or had already received a booster shot.

Put another way, 79% of fully vaccinated (i.e. eligible for the booster) Americans said they would get the booster in the poll.

Still, 53% of all adults getting the booster represents a lower base than the adults who said they would definitely or probably would get the vaccine when it was initially offered.

In early December 2020, 71% of adults told the Kaiser that they would definitely or would probably take the vaccine.

In the new Kaiser poll, just 36% of Republicans overall said they would get the booster.