apolitical

Short definition from Wiktionary

Adjective

1. 1
   Having no interest or involvement in politics.
2. 2
   Having no political relevance or function.
3. 3
   Politically neutral, unbiased, non-aligned, free from party politics.

Noun

1. 1
   A person with no involvement or no interest in politics.
2. 2
   An unbiased candidate or voter, free of a party platform.
3. 3
   A neutral or uncommitted person.