Within the Democratic party, there's debate about how to handle climate change. There are people who advocate for slow, cautious changes and still see fossil fuels having a small role to play in the future. There are others within the Democratic party that want more drastic action, and make a huge government spending program to try to rapidly move the US energy to renewables (even naming it after one of the biggest US government programs made during the depression). That's normal politics. And it's all within the Democratic party.
The GOP mostly deny climate change exists. A few GOP members suggest that climate change is happening, but is a natural event not caused by man.
The recent house drama from the speakership battle was caused because 10 nutjobs didn't want to fund any social programs and wouldn't approve the budget. Most GOP compromised and made a TEMPORARY budget proposal that the Democratic reps would vote for. This caused the hardliners to remove the speaker. Because he had the audacity to compromise on a TEMPORARY budget.
Removing policy aside and just looking at behavior, many GOP members do not believe in compromising to get things done. There's attempts to not hold elected officials accountable (unless they are from the other party). It's very little cooperation and more retaliation.
A single GOP senator didn't like that the US military would reimburse a servicemember's travel for medical care if they lived in a state where some reproductive treatments weren't available. This one senator has single-handedly denied 360 military promotions and nominations to military positions. The Senate has historically tried to make it where being the minority party still had some power, so the rules let this happen (the other GOP senators on this committee weren't blocking, just the one guy).
The Democratic senators became so fed up they decided to change the rules to prevent a single committee member from blocking promotions. While most GOP senators publicly condemn this guy, many said this rule change was too much. So it looks like the rule change vote will be along party lines, although the #1 GOP senator has said it might be necessary to vote through to get the military back on track.
The last GOP senator really known for being reasonable and wanting to work collaboratively (McCain) died. He was respected by both parties until Trump came along, and now the GOP don't really hold his legacy in high regard.
Sorry, a lot longer than I intended, but it's a pattern showing no desire to try to govern effectively. Putting all issues of policy aside, I think it's a bad idea to vote for the GOP.
Regarding the 2017 comment: I was at work and read that quote "nobody knew healthcare could be so complicated" and I laughed hard for a while. Then sighed. Then I had to go for a walk. Deep down I had really doubted someone could get that far in life and be as dumb as he appeared to be. That statement shredded that thought. He wasn't acting. He was really that dumb, and the next three years were going to be rough.