Republican did a test, screening people running for office (10)
I believe the answer is:
candidates
'screening people running for office' is the definition.
I can't judge whether this defines the answer.
'republican did a test' is the wordplay.
'CANDIDATES' is hidden in amongst the letters.
But, I am uncertain how this is indicated.
Can you help me to learn more?
(Other definitions for candidates that I've seen before include "those awaiting interview?" , "Entrants" .)