SAN DIEGO (AP) – A ballot measure to partially dismantle California’s longtime system of tying property taxes to the last sales price trailed Wednesday but the outcome remained uncertain. No votes on Proposition 15 were ahead by 3.5 percentage points with about 11.6 million votes counted, a wider margin than Tuesday night. Another ballot measure that would allow homeowners who are 55 and older, disabled or wildfire victims to transfer a primary residence’s tax base to a replacement home was ahead Wednesday.