As far as I can tell, none of them want to strike. However, contract is up and negotiations aren't going well. Last I saw the district hasn't even offered a tentative agreement, so the teachers don't even have anything to vote on. There are only 3 bargaining meetings left on the schedule and voting is supposed to happen next week. The new superintendent is on the bargaining team (possibly in charge) and has admitted that he hasn't even read the existing contract.
Disclaimer: not a teacher, just in the loop.