Sure he has to do it all over again come November, but the districts have changed giving him more of an advantage. This is the fifth fail for Trump stumping for Republicans in special elections. He needs to be fired.
This of course does indeed look like the Democrats will take the House next year. But the most serious problem is that it is doubtful that they can take the Senate this time round and may even lose a few. Which means with talk of both Kennedy and Ginsburg retiring Trump and his Senate can add two more Evangelical Christians to the SCOTUS. Add to that an impeachment making Pence president which would make The Handmaid’s Tale non fiction.
The simple answer of course is to make North and South Dakota, Montana, Wyoming and Idaho one state. Which all together have less population than all of South Carolina.