A new USC study found Los Angeles County residents see homelessness as a serious problem, listing mental illness, addiction, the high cost of housing and financial pressures as the four top factors.

Proponents of Measure A, which is proposed on the Nov. 5 ballot and would implement a 0.5% sales tax in L.A. County for homeless services that doubles the current tax, view the USC data as an indication of voter support. But that remains to be seen.A poll conducted between Sept. 25 and Oct. 1 by the UC Berkeley Institute of Governmental Studies and co-sponsored by the Los Angeles Times found nearly 50% supporting the measure. The poll had a 3% margin of error.

The Measure A campaign said their blitz of advertisements on YouTube and TV screens, as well as phone banking — mostly happening after the UC Berkeley poll was taken — moves the needle toward passage. The measure needs a majority to pass.

“All polls show that voters support Measure A, and more move our way when they hear that it will stop a 25 percent increase in homelessness and move people from tents into mental health treatment,” said Sarah Dusseault, treasurer and adviser to the Measure A campaign, in an email on Friday.

The campaign has reached 6 million people on YouTube and produced 46 million ad impressions. Dusseault said the campaign has persuaded 200,000 potential voters to support Measure A.

“We think we are doing really well,” she said.

The campaign did not offer any specific polling information, other than to say the UC Berkeley poll was done prior to their campaign blitz.

If Measure A passes, the cost for middle-class families is estimated at $5 per month, and $2 per month for low-income families, according to the Measure A campaign.

Measure A would institute the 0.5% sales tax and make it permanent. It would also repeal Measure H, the 0.25% sales tax in the county that currently funds programs to reduce and prevent homelessness. Measure H was passed by 69.3% of county voters in 2017 and it expires in 2027.

Measure A would raise about $1.1 billion in the first year, according to a fiscal analysis by Oscar Valdez, the county auditor-controller.

The money raised would breakdown as follows:

• 61.25% to L.A. County for homeless services.

• 35.75% to the L.A. County Affordable Housing Solutions Agency for affordable housing and homelessness prevention.

• 3% to the L.A. County Development Authority for local housing production.

The Yes on A campaign emphasizes what would happen after Measure H expires if there’s no funding to replace it.

New data released by the county Chief Executive Office showed that more than 57,400 people in shelters or permanent housing could end up back on the streets should Measure A fail. The funding cut would result in a 28% rise in unsheltered homeless people countywide, the CEO’s office said.

Of the eight regions examined by the county CEO, the San Fernando Valley would see the third-highest impact, with an estimated 8,093 people returning to the streets. Central Los Angeles was the highest, followed by South Los Angeles as the second-highest.

The permanent funding would allow the county, its 200 nonprofit partners that provide services, and cities to continue providing interim and permanent housing and increase mental health and drug addiction services. The measure would also put money into building affordable housing and providing subsidies to those who are in danger of becoming homeless, according to the campaign.

“Measure A guarantees continuity of critical services such as mental health care and addiction treatment, and helps us reach our most vulnerable neighbors,” said Stephanie Klasky-Gamer, president and CEO of L.A. Family Housing. The group is based in the San Fernando Valley.

Measure A is supported by L.A. Mayor Karen Bass and L.A. County Sheriff Robert Luna. It also has endorsements from 150 or more organizations including the Los Angeles Business Council, the Central City Association of Los Angeles, the Hospital Association of Southern California and the Greater Los Angeles African American Chamber of Commerce.

Opposition comes from the Howard Jarvis Taxpayers Association and others who argue that county residents cannot afford the 0.25% tax raise and that sales taxes are already above 10% in many areas.

Opponents also say Measure H has not worked and they disagree with pouring more money into a haphazard system.

“To date, we have not seen any detailed plan on how to address the homeless situation that plagues our city and county,” said Jack Humphreville, a columnist and a ratepayer advocate for the Greater Wilshire Neighborhood Council whose name appears on the ballot argument urging a “no” vote.

The county recorded 75,312 homeless people in the January homeless count, almost the same as the 75,518 recorded in 2023 and welcome news after homelessness jumped 9.1% between the 2022 and 2023 homeless counts. The number of people living in shelters rose by 12.7%, the January count found.

The county CEO report says the county has been working with cities and other agencies since Measure H passed in 2017. The report says:

• Overall, the county and its partners have placed 119,433 people into permanent housing. Of those, 44,129 were housed with Measure H funds.

• About 157,141 were placed into interim housing. Of those, 82,966 were housed with Measure H funds.

• About 37,920 people were prevented from falling into homelessness, including 10,651 who were kept in their housing with Measure H funds.

The new measure is more focused, flexible and accountable, Dusseault said. The measure would set goals for sheltering homeless people and for mental health care. It would allow the county to alter funding formulas to accommodate a program that’s performing but needs extra funds, she said.

A new area would support rental assistance programs that help people stay in their homes. County statistics say for every 100 people getting housing, 125 more fall into homelessness, exacerbating the problem.

One example is Brilliant Corners, a nonprofit housing provider that executes master leases of apartment buildings at well-below market rates, Dusseault said.

Potential voters contacted by the campaign have said they want to see more accountability this time. Dusseault said Measure A dollars would be audited annually and overseen by a centralized commission.

“They like this measure because it has a combination of strategies,” Dusseault said. “This measure puts in funding for homeless services and for prevention, as well as for the creation and preservation of affordable housing.”

Many of those contacted by the campaign said they were concerned about homeless individuals clogging hospital emergency rooms.

The opposition argument on the ballot references the fact that Measure H sunsets, while this measure does not. The “no” argument signers object to a permanent tax for reducing homelessness.

“We haven’t heard that from voters,” Dusseault said. “Voters said show me where you’ve added accountability and how you can change according to outcomes.”