Both Democrats and Republicans seem less likely to get a booster than get an initial vaccination, but Republicans in particular have been the most down on a booster.

In the new Kaiser poll, just 36% of Republicans overall said they would get the booster. This is significantly less than the 77% of Democrats.

For comparison, the same Kaiser poll found that 85% of all Democrats were fully vaccinated and 55% of all Republicans were.

This means that the partisan gap on boosters was 11 points higher than it was on becoming vaccinated and that spread was already pretty wide.

The partisan gap on boosters is also wider than the gap on vaccines when the vaccines were first becoming available to the public.