Okay, maybe I'm biased because it was my assignment to report out some of the downballot races tonight, but when the presidential primaries are basically all over but the cryin', they make for much more interesting politics. But once Biden and Trump make it official, don't let the intensity of the presidential race overshadow these races further down the ballot. There's a lot at stake — majority powers in two narrowly divided chambers! — and these races can sometimes tell us more about what voters think is important than the marquee race at the top of the ticket. Of course, you can always depend on 538 to keep you up to speed!

—Kaleigh Rogers, 538

With the exception of a remarkable outcome in American Samoa, this was a night without very many surprises. Trump and Biden continue to dominate their respective parties, even as doubts linger — about age, about policy and about electability, to name a few concerns. But Trump's main opponent, Haley, has just won her second primary of the season — Vermont. Biden has opposition on the left, but no challenger; from the center of his party, he has a challenger, but no clear opposition.

One lesson from all of this is that even for candidates with as many liabilities as these have, it is incredibly difficult to compete with the name recognition and influence of a sitting or former president. In theory, parties could opt to nominate someone other than the sitting president — in practice, they have not really done so since the mid-19th century. Parties have come to be defined by their presidents. We especially see this with Trump, but this primary season and Super Tuesday have highlighted just how much it's true of Biden, too.

And yet it shows the cracks in the presidential dominance of their parties as well. Even as Trump has largely taken over the GOP, there remains a consistent, if small, segment that would like to see the party move in a different direction. And even as Biden continues to (almost) sweep the primaries, activists are organizing to use the primaries to protest some of his policies. Still, it's telling that ultimately these intraparty disagreements aren't framed as fights between factions, but rather in terms of support or opposition to the presidential figure at the head of the party.

—Julia Azari, 538 contributor

We're not ending the live blog just yet since there are more results to come ... But we're going to get some shuteye and be back here tomorrow, bringing you updates from some of today's later-closing races.

So, it's "final" thoughts time — what did everyone take away from tonight's results?

—Tia Yang, 538

Interesting, Geoffrey. I was expecting Carl to win that one, as he had the geographic advantage: Carl and Moore were thrown together into this new district in redistricting, and Carl represented 59 percent of residents in the new district. But perhaps Moore’s conservative bona fides carried the day: He is a member of the House Freedom Caucus, so this primary was a victory for the insurgent wing of the Republican Party.

—Nathaniel Rakich, 538

If the polls are right, there will be very little drama tonight in presidential races: Trump has massive leads over Haley in virtually every state. For instance, here's what our primary polling averages say in the six states with enough polling to calculate one:

Trump also leads by at least 42 percentage points in the few state-level polls we have this year from Alabama, Maine, Minnesota and Oklahoma. His lead is smaller, though still substantial, in the most recent surveys of Utah (27 points) and Vermont (30 points). Unfortunately, we're flying blind in the last three states; we don't have any polls of Arkansas since last fall, or any polls of Alaska or Colorado, period.

But what if … the polls are wrong? Even in the states where we've calculated averages, there is precious little truly recent polling. The only polls of Super Tuesday states conducted entirely within the last month were four of California, two of Maine, one of Minnesota, two of North Carolina, one of Texas, one of Vermont and one of Virginia. That's not a lot of data to go off.

Plus, primary polls so far this year have overestimated Trump's margin over Haley. This isn't necessarily unusual; since 2000, presidential primary polls have had an average error of 9 points. But the fact that the direction of that error has been consistent so far is … interesting. We usually caution against trying to predict the direction of polling error in advance, but this could — could — indicate that pollsters' likely-voter models for the primary are too weighted toward the Trump wing of the GOP.

As Geoffrey and I wrote yesterday, there are certain states — Colorado, Massachusetts, Vermont and Virginia — that seem demographically favorable for Haley. Despite what the polls say, I wouldn't be totally shocked if Haley pulled off a win in one of them. As noted, Colorado hasn't seen any polling this cycle, and Massachusetts hasn't seen any in a month. And while a poll gave Trump a 30-point lead in Vermont a few weeks back, the most recent poll of Virginia put Trump's lead over Haley at just 8 points among likely voters.

—Nathaniel Rakich, 538