I’m afraid I don’t have any predictions for this one (yet) but I do recall the McLaughlin group divvying up the Congressional seat pie in 1994 and ‘giving’ slight to strong edges to the Dems in both houses (based on their assessment of individual Senate & House seat races).
As we know now those predictions were wrong wrong wrong.
The only Washington insider, I believe, that predicted that the Republicans would take control of both the House and Senate was Kenneth Bode, moderator for Washington Week in Review. Bode succeeded David Duke