Why don’t the Democrats there Have large mortgages?
Most Rats tend to be younger non-white people who rent rather than own because they don't have enough money to make a down payment or their job situation may fluctuate too much to justify putting down roots. Of course if property-owners have to pay more in taxes that is generally reflected in higher rents but many renters do not make the connection between lower property tax deductions and higher rents. There is also the fact that Dems like to enact rent control measures.
So Trump's tax measure in 2017 doesn't really hurt California Democrats that much. It just makes life that much harder for property owners, who tend to skew Republican, living in California.
What the 2017 tax cut did was take away the redistribution of wealth from low property tax states to high property tax states that was occurring due to property tax deductions.
Allowing people in high property tax states to deduct those taxes is in reality a way to allow those states to tax the rest of the country, since they end up paying less for the same Federal government benefits (take that as you like) than people in a low property tax state. And it is particularly egregious for the middle class who often own property but are not overly wealthy.
People that have a problem with ending the property tax deduction should not take it out on the Trump Administration or the GOP; they should address the problem of high taxes with their STATE government.
“many renters do not make the connection between lower property tax deductions and higher rents. ”
Wow, you have to be kind of stupid not to get that. But I guess the point is that if rents are raised, then it is affecting Democrat voters. Although I don’t buy that the more well-off people in California are all Republicans, the large metropolitan cities wouldn’t be so blue if that was true. You’ve got lots of unskilled and untalented people making money in Hollywood, as an example!