The GOPs have left the MID out of their recent party platform. It looks to be toast within the next ten years, probably much sooner. So . . . does this hurt the housing market? Most likely victims are existing homeowners and mortgage payers, even if they get grandfathered, because incremental buyer is no longer subsidized. OTOH, the MID doesn't make a difference for the new buyer. The price of the house stays the same, just shifted from taxes to principal or vice versa. Housing is different than other markets. Tax holiday does not drive up price of school supplies, but MID does drive up house prices. I saw a study that reducing the capital gains tax on housing helped existing homeowners, but did not help new buyers. All it did was drive up the price of new homes, negating the tax benefits. I think eliminating MID will work the other way, hurting existing homeowners (where grandfathered or not) and neutral for new buyers and renters.