Anyways, getting back on topic.... speculating about the rest of the Trump presidency.
The house is going to the Democrats. Not much will change in the Senate. Based on that status, I expect:
1. Adam Schiff will revive the cursory investigations in the House.
2. Because Trump will be blocked from massive cuts to medicare, etc to pay for the GOP tax cuts, the deficit and debt is going to grow pretty damn fast. This will be consistent with previous GOP administrations. This will occur despite a booming economy, which is the best time to raise revenue and draw down the debt.
3. Trump will attempt some sort of bait and switch legislation with Dems and accuse them of doing a bait and switch. Not sure if that will be budget or immigration, but it will be ugly.
4. His thumbs will get calloused from Twitter-binging.
Despite the faux-crowing, I'm finding it hard to see how anything will be more favorable to the GOP, while much is better for the Dems
1) Senate - doesn't really matter whether they have 51 or 54 seats; with the lesser they were still able to appoint Kavanaugh, DeVos, Pruitt and a long list of other controversials. So they'll keep doing this.
2) House - Dems now control the house, which means they control the committees and (theorically) the power of the purse. They can investigate and decide which bills pass through committee. If they are stupid they'll grandstand, hold poorly-construed public hearings a-la-Benghazi and lose public support. If they're smart they'll push popular bills and discretely investigate, holding public hearings only when they are well formulated and routed in evidence. I fear they'll do the former, but hope for the latter
3) SCOTUS - Will RGB and Breyer hold on til 2020? Or will one or both be replaced setting up a conservative court that will last two decades or more? To me this is the wildcard
4) State Governors - some nice pickups for Dems, and fewer state allies for Trump to draw on, particularly in the rust belt so important to his '16 victory. This will be important both for the 2020 census as well as the 2020 presidential election.
5) moderates - the GOP has lurched even further to the right, with many of the victors closely tied to Trumpism. Their big losses came in suburban districts. Dems have a choice for the next election - they can push a progressive agenda or nominate someone closer to the center that can continue to pick off center-right voters that are sick of Trump's rhetoric. The latter will certainly be an easier course for them but the temptation to strike with a far left candidate will be considerable, given the enthusiasm from that wing of their base.