In 1986 there was a Republican in the White House, and the Democrats retained control of the House -- which they had controlled continuously since January 1955.
In other words, there was nothing "historic" about 1986 at all.
And even if there had been something historic about 1986, then why is the author making a big deal about it when the GOP maintained control of the House during a Republican administration in 2002?
Does anyone fact-check this nonsense anymore?
Well, the Dems regained control of the Senate in 1986 after losing it in 1980. I suspect the author was confused.