voting system

NOUN
13 LETTERS · STARTS WITH V

voting system is a valid 13-letter word worth 21 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
V4O1T1I1N1G2S1Y4S1T1E1M3
4 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 4 + 1 + 1 + 1 + 3 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does voting system mean?