The most common and most likely answer to this crossword clue is the 7 plus 7 letter word POLLING STATION
I've seen this crossword clue in The Guardian
P
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L
L
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N
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S
T
A
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More clues leading to the result POLLING STATION
- Good way to cut use of fertiliser? It gets my vote!
- At times school may be one good way into worker’s job
- Here you can make your mark cutting post
- Revolting, sickly, nasty smell about TV channel in the home of democracy?
- A building in which political opponents will get cross more than once
- Place where everyone turns out for a party?
- Where people vote for cutting radio broadcaster
- Key fact in reproduction method where crosses accumulate
Buddy explains!
The straight part
We know that "Here you can make your mark" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case here you can make your mark = polling station.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.