"Residence" for the purpose of registering and voting means a person's permanent address where he or she physically resides and maintains his or her abode. However, no person gains residence by reason of his or her presence or loses his or her residence by reason of his or her absence:
Absence from the state on business shall not affect the question of residence of any person unless the right to vote has been claimed or exercised elsewhere.
RCW 29A.04.151
Residence, contingencies affecting: State Constitution Art. 6 s 4.