What the polls say about a Biden v Trump matchup
(The polls say yeah so... yeah. Admittedly this is a repeat of 2016 and Ukraine will basically be the same thing as Clinton's emails and nothing is truly guaranteed.)

Can Biden beat Trump? The truth is he's just as risky as Bernie
(Neither of them is a guaranteed win. If there was a safe choice, it wasn't one of these 2.)

Stop saying Biden is the 'most electable'. Trump will run rings around him. (No. And not because of his record or gaffes, but because he is an establishment politician and Ukraine will leave the same impression on Biden as Clinton's emails. Are you people insane? Have you forgotten 2016?)

Fears grow over Nevada caucus malfunction (Probably as bad as Iowa. Not paywalled)

Another caucus is coming. But Nevada will look completely different (It will be far more representative than Iowa. Also they will use a Google Form so technical issues will be limited. Paywalled)

What we know (and don't) about the Nevada caucus 'tool' (Covers on the 'tool' that will be used to count the votes, potential backups in case of failure and a few other caucus related technicalities. Not paywalled)

This debate will start at 8pm EST. From CNN's website:

It will air exclusively on CNN, CNN International and CNN en Español, and will stream on CNN.com's homepage and NYTimes.com's homepage. The debate will also stream live on the following Facebook Pages: CNN, CNN International, CNN Politics, CNN Replay, AC360 and Erin Burnett OutFront.

In addition, the debate will be available across mobile devices via CNN's and New York Times' apps for iOS and Android, via CNNgo apps for Apple TV, Roku, Amazon Fire, Chromecast and Android TV, SiriusXM Channels 116, 454 and 795, the Westwood One Radio Network and National Public Radio. You can also ask Amazon's Alexa to play the debate, and the voice-controlled assistant will play the audio of the debate.

• Direct link to the CNN livestream
• Direct link to the New York Times livestream

I don't have as much to put up here as @alyaza but I thought it'd kick off the discussion as the debate begins.

Watch live on your local ABC station.
Edit: or on YouTube (thanks @deimos) https://www.youtube.com/watch?v=2UWVO0Trd1c

Only 10 candidates and 1 night of debates this time.

welcome to debate #2, night 2. with night one out of the way, and the expectations set by our first night of candidates, we turn to a much more diverse, much more ideologically separated group of candidates ranging from asian-american technocrat andrew yang to moderate-progressives african-americans in booker and harris, and from berniecrat-type tulsi gabbard to solidly moderate joe biden. it seems likely that we'll see more fireworks today than we did last night, especially given CNN's adversarial lines of questioning in the first night. as always, here are all the details you'd ever need, and probably then some:

i recommend you sort by newest first (or order posted) instead of the default since this thread will likely be semi-active and covering a live event.

How to Watch:

The debate each night will start at 8 p.m. ET and last two hours.
TV broadcast: CNN
Free online stream: CNN.com, CNN apps
Additional coverage: CBS News, NBC News

CNN's stream is here.

The Candidates:

The second Democratic presidential debate: July 30-31, 2019

~ Night 1 (Tuesday, July 30): Vermont Sen. Bernie Sanders, Massachusetts Sen. Elizabeth Warren, South Bend, Indiana, Mayor Pete Buttigieg, former Texas Rep. Beto O’Rourke, Minnesota Sen. Amy Klobuchar, author Marianne Williamson, former Maryland Rep. John Delaney, former Colorado Gov. John Hickenlooper, Ohio Rep. Tim Ryan, and Montana Gov. Steve Bullock. ~
Night 2 (Wednesday, July 31): Former Vice President Joe Biden, California Sen. Kamala Harris, New Jersey Sen. Cory Booker, former HUD Secretary Julián Castro, business leader Andrew Yang, Washington Gov. Jay Inslee, Hawaii Rep. Tulsi Gabbard, New York Sen. Kirsten Gillibrand, New York City Mayor Bill de Blasio, and Colorado Sen. Michael Bennet.

The Rules:

A candidate "who consistently interrupts" on Tuesday and Wednesday nights will be penalized by having his or her time reduced.
Campaign representatives have also been told there will be no "lightning round"-type questions requiring a show of hands or one word responses.
The debate will be moderated by Dana Bash, Don Lemon and Jake Tapper. Each of the 10 candidates each night will be allowed to make brief opening and closing statements, the network said.

The Analysis:

NPR has 5 questions for this debate:

1. Will there be any distinctions drawn between Sanders and Warren?
2. Will some of the air be taken out of Sanders' sails because Biden isn't onstage?
3. How is race raised?
4. Who breaks out?
5. Without hand-raising, will we get answers that are as clear?

other pre-debate analysis pieces that may be pertinent to you:

Aftermath of Night One:

• POLITICO: It’s a center-left party after all
• the Atlantic: Elizabeth Warren’s Big Night
• NPR: Sanders And Warren Stand Together: Takeaways From Tuesday's Democratic Debate
• NBC News: The Warren-Sanders wing comes up short
• NPR: 'Impossible Promises' Vs. 'Small Ideas.' Moderates And Progressives Clash At Debate
• the Atlantic: Democratic Moderates Fade Into the Background
• Buzzfeed: Mayor Pete Has A Plan To Address Systemic Inequality For Black Americans. He Was Barely Able To Talk About It In The Debate.
• Vox: Is it me or is Marianne Williamson making a lot of sense?
• Vox: 3 winners and 4 losers from the first night of the July Democratic debates
• the Guardian: Who won the Democrats' debate? Our panelists' verdict

Expectations for Night Two:

• NPR: Your Guide To Night 2 Of The Detroit Democratic Presidential Debates
• Vox: What to expect at night two of CNN’s Democratic debate
• the Guardian: Joe Biden, Kamala Harris and other 2020 candidates prepare for debate rematch
• Buzzfeed: The Big Things To Watch For At Wednesday’s Democratic Debate