This was not supposed to happen. And to be sure, until votes are cast in November, it can't be said to have happened. We have a long way to go before the mid-terms.
But the punditry has pretty much been assuming for months that the normal dynamics of a mid-term election, combined with President Trump's low approval ratings, were setting things up for a pro-Democrat wipeout so severe that chances were we'd once again have to get used to hearing the words Speaker Pelosi. As recently as December, polls of a generic congressional ballot showed Democrats with a whopping 12-point lead, which meant that when people were simply asked which party they would rather see running Congress - without any candidates' names being mentioned - 12 percent more said the Democrats.