The most common and most likely answer to this crossword clue is the 9 letter word DEMOCRATS
I've seen this crossword clue in Financial Times
D
E
M
O
C
R
A
T
S
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The straight part
We know that "such politicians" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case such politicians = democrats.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DEMOCRATS mean?
DEMOCRATS noun- A supporter of democracy; an advocate of democratic politics (originally as opposed to the aristocrats in Revolutionary France).
- Someone who rules a representative democracy.
- A large light uncovered wagon with two or more seats.