I worked for the welfare department in Fresno California in the 80s. A judge forced a "homeless" program on the welfare department. They would pay first month, last month and deposit. With the deposit being tied to the rent amount and all of that being tied somewhat to what welfare paid on a monthly basis. IE if you got a $700 welfare check, they would NOT fork out $1400 a month rent to you.
This program had two big effects. The first one is it hurt people who lived just above welfare status. If a crap-hole appartment went for $300 a month and a decent place went for $400. The crap-hole manager raised the rent to $400. Well to keep poor people with poor life skills who will trash the place out AND the fact that the crap-hole goes for $400, now the decent place raises their rents to $500. So this hurt a whole bunch of people who did not quality for welfare.
The second thing is many folks abused the program. You could get homeless assistance onec a year. So you did not pay rent (pocket 1 months rent), then got an eviction notice, welfare department pays 1st months rent (so pocket 2nd month of rent money). Then you dont pay rent on month 12, (pocket more rent money), they call it your last month, plus keep the deposit and you are now homeless again after a year and qualify for more help. There were lots of people who did this 2 and 3 years in a row.
The same will be true of this minumun wage increase. If you are a crap-hole manager and charge X now and everyones pay almost doubles, you can almost double rent. Now that you raise the rent the non-crap-hole place will raise rent as well. If a carboard box rents for x then a place with a real roof must rent for more than x.
Now it is not just labor costs that go up, rents will go up too. This will hurt everyone but union employees whos minumun pay is tied to being 150% or 300% of minumun wage.