NEW You can now listen to Fox News articles! Everyone sees President Donald Trump ’s weak polling numbers. But almost nobody is asking the more important political question: Who are the Democrats becoming? Right now, Democrats are benefiting from economic frustration, inflation fatigue and the natural gravity that pulls against the party in power during midterms. FOX NEWS POLL: AS ECONOMIC PAIN DEEPENS, DISAPPROVAL OF TRUMP HITS NEW HIGH California Gov. Gavin Newsom, left, and former Vice President Kamala Harris stirred 2028 speculation at the Democratic National Committee's winter meeting (Tayfun Coskun/Anadolu via Getty Images; ROBERTO SCHMIDT/AFP via Getty Images) But a party winning because voters are hurting is not the same thing as a party voters truly believe in. And that distinction may matter more than any poll. The latest New York Times/Siena polling showed Democrats with a sizable advantage on the generic congressional ballot . On the surface, that sounds like momentum.…