You only need a handful to cause problems.
Realistically: it's a small worry, practically non-existant. The cult is shrinking every day, losing momentum. Sure the ones that are left are distilled fanaticism, but with less of them every day, the chances of enough of them being in positions of actual power is slim.
This is, of course, a separate observation to the stooges being placed in government positions around the country in the push by project 2025.
Check your voter status, get your family to check their status, get your friends to check. Vote blue down ticket, it's the only way to be sure.