Compared to the first 55 minutes of the first GOP debate, there have been nearly twice as many attacks on Biden so far.

Scott leads all candidates with five attacks on Biden. Follow along with the NBC News attack tracker.

Haley is leaning more toward the phrasing of “parental involvement,” a slight departure from how conservatives (following DeSantis' Florida moves) have been advocating for “parental rights” as they push their way onto local school boards. It's a movement we’ve seen play out here in Southern California that hass resulted in somewhat violent protests at board meetings (Glendale, Temecula, Chino Hills).

NBC News is watching the debate at New England College with eight college students who vote in New Hampshire.

“I appreciate the fact that Vivek addressed the mental health epidemic in this country, although I think it’s unrealistic to expect everyone under 16 to stay off social media,” said Michael Toronto, 19, a student at Plymouth State University.

“Are you guys having trouble seeing me?” Scott asks on the side of the debate stage. It’s worth noting he hasn’t gotten a direct question since the first quarter of the debate.

NBC News is watching the debate at New England College with eight college students who vote in New Hampshire.

"Pence has made a serious habit of avoiding solid answers to questions," said Brendan Bunnell, 22, a student at the University of New Hampshire. "Additionally, to younger voters like me, he comes across as a moral grandstander when he does this. His remarks on Vivek’s age are also off-putting — in my opinion, of course.”

The Biden campaign so far is framing this as showing that despite Trump’s absence from the debate stage, the GOP candidates aren’t that different.

The campaign’s director of rapid response, Ammar Moussa, tweeted: “Simple question: An hour in, has anyone on the debate stage named a single way they’re different from Donald Trump? The answer, pretty resoundingly is...no.”

Campaign spokesperson Kevin Munoz pushes a similar point, saying GOP hopefuls are campaigning on similar “failed” policies that were pursued by the Trump administration.

NBC News is watching the debate with dozens of California conservative voters less than 2 miles from the debate stage.

It took me a quarter of the way through the debate to find the room’s black sheep: Nancy Mazza.

Staunchly Republican. Hates Trump.

She repeatedly referred to him as “Con Don” over the grumbling of her tablemates and spoke to a hope for a candidate like Haley to defeat him … not necessarily Biden.

“We need new blood in the party,” she exclaimed.

She also likes Haley for a more measured stance on abortion and was appalled at the Roe v. Wade decision. She feels Haley can “bridge the gap.”

That was likely to be the most side-eye I’ll see all night.

The second hour of the debate starts with a question about education. The candidates on the stage have to convince Republican primary voters not only that they have the best plans on education — they have to persuade voters across the spectrum to trust their party to handle the issue.

Per our latest NBC News poll, just 30% of registered voters say Republicans are better at dealing with education than Democrats. More — 40% — say Democrats are better at dealing with the issue.

Presidential primary debates are always targets for issue ads — groups regularly spend big money trying to target politically plugged-in viewers like those watching debates. But an ad against a ban on menthol cigarettes? That’s a new one for me.