The most common and most likely answer to this crossword clue is the 7 letter word CASTING
I've seen this crossword clue in The Daily Telegraph
C
A
S
T
I
N
G
More clues leading to the result CASTING
- Allocating roles in reconnaissance, keeping close to suspect
- Sing and act? Resulting in selection
- In auditions, this vote will decide the issue
- Tossing about on fiddle
- About to get a bite, fishing
- . Choice of actors is enduring, though chief left for China's capital
- Job in film about a con game
- Actors call for throwing out lines
Buddy explains!

The straight part
We know that "auditions/this vote will decide the issue" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case auditions/this vote will decide the issue = casting.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 CASTING mean?
CASTING verb- (physical) To move, or be moved, away.
- To direct (one's eyes, gaze etc.).
- To add up (a column of figures, accounts etc.); cross-cast refers to adding up a row of figures.
- (social) To predict, to decide, to plan.
- To perform, bring forth (a magical spell or enchantment).
- To throw (light etc.) on or upon something, or in a given direction.
- To give birth to (a child) prematurely; to miscarry.
- To shape (molten metal etc.) by pouring into a mould; to make (an object) in such a way.
- To twist or warp (of fabric, timber etc.).
- To bring the bows of a sailing ship on to the required tack just as the anchor is weighed by use of the headsail; to bring (a ship) round.
- To deposit (a ballot or voting paper); to formally register (one's vote).
- To change a variable type from, for example, integer to real, or integer to text.
- Of dogs, hunters: to spread out and search for a scent.
- To set (a bone etc.) in a cast.
- To open a circle in order to begin a spell or meeting of witches.
- To broadcast.
- The act or process of selecting actors, singers, dancers, models, etc.
- A manufacturing process using a mold.
- An object made in a mold.
- The regurgitation of fur, feathers, and other undigestible material by hawks, to clean and empty their crops.
- The excreta of an earthworm or similar creature.
- The act of converting between data types.