Hopefully he is full of BS ... but unfortunately here in NH he is probably correct.
If the NH 2018 primary voting totals are any indication ... the Repubs are going to get wiped out ... even though the Repubs in NH balanced the budget, cut taxes, have the lowest Unemployment rate in recent memory ... yet it appears the majority of the people up here have been brainwashed into hating Trump to the point of insanity.
Did you have a lot of primary challenges on the GOP side? Do you have an open primary? Are the majority of your congressional seats GOP or Dem?