When you look over the win-loss column between the two major parties, what is striking is how little changed as a result of the 2016 election. The Democrats picked up 6 seats in the House and gained 2 seats in the Senate. They are still a minority in both chambers, but if a three dissident Republicans turn against Trump, he won’t get everything he wants.
The Louisiana Senate contest was not held on election day. The Republican is leading. The election will be held on December 10.
Diane Ravitch's blog 
Also Republicans have 33 governor positions and 32 state legislatures.
Louisiana has an all comers open election on election day. If no one gets 50% (which is what happened this time ) the top two have a runoff in December. So there was an election, effectively an open primary