(assuming this plays through to the end in their favor)
That's where the worry stems from.
Edit: and by that, I don't mean this case specifically, but rather the fight for *** marriage in general throughout the country, state by state.
I think it will. I showed the aggregate polling
over the last 10-15 years in a previous thread and we've just hit parity for support versus opposition whereas you don't have to go far back to find 10 or 20 point spreads against it. It will take time for state legislatures to roll over enough to overturn laws or re-amend their constitutions and some states will of course hold out much longer than others (such as the N. Carolina vote). But the trend certainly seems to be in favor of SSM and I think eventually you'll even have GOP controlled legislatures allowing it.
One thing I didn't expect is that you're seeing a lot more acceptance
of SSM since Obama came out openly in favor of it. Assuming these new numbers are legitimate, that can have a real impact going forward as African-Americans were one of the bastions of support anti-SSM advocates depended on (again, see N. Carolina and California).