Gingrich actually undermines his credibility by blaming this all on the Democrats. The GOP had two years to fix this problem themselves and simply refused to do so. They are AND ALWAYS HAVE BEEN just as complicit as the Democrats are.
Except, it isn't all Republicans, either. It has been the establishment types which include nearly all Democrats and a lot of Republicans.
Their have been enough of the Republican RINOs to keep the party from being effective with President Trump, for two years.