Most people (myself included) thought the Obamacare mandate would be easily struck down by the USSC. We know how well that turned out.
Conservatives are still pulling the knife out of their back on that one.
Frankly, I think more effort should be put into countering ObamaCare should it survive into the next presidencey as is put into any effort to repeal it.
The presidential race is a 50/50 proposition to win, imho. Republicans holding onto the House I would put at about 65/35. Democrats hold onto the Senate I would put at about 50/50.
That means there’s about a 1 in 6 chance that all 3 will go anti-democrat.