Things to know about California's Proposition 1

California voters will decide on a statewide ballot measure that Gov. Gavin Newson says would address the state's ongoing homelessness issue

SACRAMENTO, Calif. -- California voters this March will decide on a statewide ballot measure that Democratic Gov. Gavin Newsom said would transform the outdated mental health system and address the ongoing homelessness crisis.

Proposition 1, the only statewide initiative on the March 5 ballot, is also one of the most complicated and lengthy measures in recent years. It takes up 68 pages of the 112-page voter information guide.

At the center of the proposition is the question of how counties could use funding that comes from a voter-approved tax on millionaires in 2004. Revenue from the tax, now between $2 billion and $3 billion a year, has mostly gone to counties to fund mental health services as they see fit under broad guidelines. It provides about one-third of the state's total mental health budget.

The ballot measure would give the state more power over how it's spent. It also would allow the state to borrow $6.38 billion to build 4,350 housing units, half of which would be reserved for veterans, and add 6,800 mental health and addiction treatment beds.

Here's a closer look at the details: