PENCE'S CLAIM: Pence said that Trump's decision to impose travel restrictions from China, ultimately "bought" the U.S. "invaluable time" to save hundreds of thousands of American lives, reinvent testing capacity and deliver billions of supplies to doctors and nurses.

FACT CHECK: Although the U.S. has conducted more COVID-19 tests than any other country, according to experts, testing capacity is still not vast or fast enough to serve all the people who need to get a test.

Additionally, although billions of items of personal protective equipment, or PPE, have been delivered to frontline workers across the country, the United States continues to experience shortages of PPE and testing supplies, according to a Sept. 21 report from the U.S. Government Accountability Office.

In April, Trump said that the U.S. would be conducting up to 5 million tests per day, "very soon." However, the national 7-day average of coronavirus tests has yet to surpass 1 million, according to the COVID Tracking Project.

To date, the U.S. has conducted over 120 million COVID-19 tests, according to the Centers for Disease Control and Prevention. 
More testing will, of course, identify more cases.

However, according to data compiled by Johns Hopkins University, there are several countries that have conducted more testing per capita than the U.S., but also have fewer cases per capita than the U.S. does -- such as the U.K., Spain and the United Arab Emirates. Those figures reflect all-time averages of daily tests conducted per capita -- and the daily percentage of tests that come back positive, which is known as the "positivity rate" or the "percent positive rate."

Despite having one of the highest rates of tests per capita, the U.S. faces the largest outbreak in the world and new cases continue to trend upward in many states. The percent positivity in the U.S. remains over 4.7%, when other countries with high testing figures report a significantly lower percent positivity rate, according to Johns Hopkins.

Meanwhile, the shortages of PPE and testing supplies are due to high global demand and the fact the domestic production of supplies is limited. According to the Government Accountability Office, "testing supply shortages have contributed to delays in turnaround times for testing results.

ABC News' Arielle Mitropoulos

"Delays in processing test results have multiple serious consequences, including delays in isolating those who test positive and tracing their contacts in a timely manner, which can in turn exacerbate outbreaks by allowing the virus to spread undetected," the report read.

--ABC News' Arielle Mitropoulos

ABC News calculated of the candidate's approximate speaking times during more than 90 minutes on the debate stage, :

Pence: 35:22
Harris: 38:48

ABC News also calculated the approximate speaking times spent on each topic including moderator speaking time:

COVID-19:-11:58
Role of the vice president: 9:27
Economy: 9:20
Climate change: 9:23
Foreign policy: 12:34
Supreme Court: 10:02
Race: 10:35
State of the election: 6:52

--ABC News' Kelsey Walsh

Shortly after the debate wrapped, Trump -- known to enjoy his time in front of the television -- signaled his approval of Pence's performance and declared him the winner in a tweet.

The Trump campaign also released a statement in which Pence's chief of staff Marc Short said the vice president made the argument to the American people that Trump is "the clear choice to rebuild the economy."

--ABC News' Terrance Smith

Social media users clamored to point out that Pence's eye looked red and enflamed, which led to speculation about his health after being exposed to COVID-19 from the president.

ABC News' Chief Medical Correspondent Dr. Jennifer Ashton weighed in, saying that pink eye has been reported in anywhere from 11% to 30% of COVID-19 cases. But as always, Ashton said that it is not possible to diagnose anyone from television and that it was a possibility that it could just be that he just had "some makeup in his eye."

An errant fly that landed on Pence's head during the debate also grabbed the attention of social media users. The Biden campaign immediately seized on the moment, using it as an opportunity to fundraise, posting a tweet asking for donations to "help this campaign fly," along with a photo of Biden holding a fly swatter.

If Wednesday night showcases Sen. Kamala Harris the prosecutor, consider the new evidence added to her case.

And if Vice President Mike Pence is cast as the best explainer and defender of Trumpism, consider how much harder his job has become.

It's been eight short but incredibly long days since the first presidential debate. Since then, President Donald Trump has struggled to denounce white supremacism; refused to commit to accepting the results of the election; spread falsehoods about the voting process; been diagnosed with COVID-19, amid a full-fledged Washington outbreak; choreographed a triumphant return to the White House to urge the nation not to let the pandemic "dominate"; pulled the plug on further coronavirus relief talks until after the election and then reconsidered the move in some late-night tweets.

Enter the number twos -- in a campaign where there's seldom been more attention on the potential need for their services.

Pre-debate squabbles in Salt Lake City include fighting over plexiglass partitions and more space between the candidates to accommodate social distancing. What's really separating the vice-presidential candidates, though, are campaigns of the men at the top of the ticket -- who have distinct styles that are nothing like those of their running mates or each other.

Four years ago, it was Pence holding steady and calm in a debate with a feisty Sen. Tim Kaine, who faced blowback for his interruptions in a mild-mannered affair. Just last year, Harris' main debate opponent was the man she now shares a ticket with -- bringing set-piece attacks that appeared to nick former Vice President Joe Biden.

Now, amid the chaos of the moment and the relative stability of the campaign, Harris will bring a case that Pence might be uniquely equipped to defend.

-ABC News' Political Director Rick Klein