For decades, thousands of Californians struggling with mental health and addiction have languished on the street. Now, voters will decide whether a March 5 ballot measure is the solution to get them the care they desperately need. Proposition 1, the only statewide measure on the ballot, would raise almost $6.4 billion in bonds for more than 11,000 new treatment beds and homeless housing units. The two-part measure would also use money already in the mental health system to expand intensive care programs and build supportive housing, potentially leaving fewer funds for early intervention or oth…