+3 Republican electoral votes
-3 Democratic electoral votes
Thats significant
I would think again....
Texas and NC have seen surges in blue voters as the cities have grown from outsiders (Raliegh Durham triangle is filled with new people due to research jobs and Houston has seen increase in Northeners from oil and gas jobs (Exxon moved its HQ to suburb of Houston).
I would bet anything that the addition of members is due to demographic growth in the BLUE counties of those two states.
These are reflections of the increasing Blue in TX and NC so the shift is not significant as we should see same party line holds on House. The few shifts of EC will not affect an election because they have not been that close in many decades.