Most of them probably will vote for Democrats if they are getting substantial benefit payments of some kind from the government. That is how the welfare state maintains power.
If the 23 million figure is accurate, that means about 18 million new Democrat voters. Real ones. Were things any different, the Democrats would be supporting border walls with moats, alligators, and land mines to halt further immigration. And they would be deporting illegals around the clock on every outbound plane or ship.
They don’t get bennies. These are entrepreneurs who came with nothing and bootstrapped.