Legal Question in Credit and Debt Law in California

Re: Eviction

Not sure what you mean. If it's joint and several liability, each tenant is responsible for all of the obligations under the lease. If your roommate doesn't perform, you have to pay everything (you are then entitled to sue your roommate to recover his/her half or whatever it was supposed to be). If either roommate has violated the lease, the landlord may seek eviction, and the fact that you partially paid the rent (if that is the case) is not going to change much, unless you can reach an agreement with the landlord to find a new roommate or to make all rent payments yourself.