Go here specifically for election day tools:

https://verifiedvoting.org/tools/

They have been doing wonderful work for years. They work nationwide.

Our Mission
Verified Voting’s mission is to strengthen democracy for all voters by promoting the responsible use of technology in elections.

We are a non-partisan organization focused exclusively on the critical role technology plays in election administration. Our staff, Board, and Board of Advisors consist of nationally-recognized subject matter experts on the issue of election integrity and the responsible use of technology. Since our founding in 2004 by computer scientists, we have acted on the belief that the integrity and strength of our democracy rely on citizens’ trust that each vote is counted as cast. In the ever-shifting world of election security, where new threats or challenges can emerge at any time, we are working to guide elections toward greater accuracy, security, and verifiability.

Our Work
Examples of our work include:

Bringing together policymakers and officials who are designing and implementing voting-related legislation and regulations with technology experts who comprehend the risks associated with the emerging digital landscape, particularly the online and electronic elements in voting.
Connecting advocates, researchers, the media, and the public to provide a greater understanding of these complex issues.
Providing guidance to election officials around the country, helping them implement best practices for election security that acknowledge local needs.
Developing assets including the most comprehensive publicly-accessible database of voting systems used around the country (The Verifier), background information on election equipment, and archives of news and publications on election technology.

how I can watch streaming for free?

Just saying...sure are a lot of potential moving pieces in this chess game.
Remember that West Wing episode when Bartlett's daughter was kidnapped and there was no VP, so speaker of the house had to take over?

Will they try to claim a vote for Trump is a vote for Pence if Trump is too sick or doesn't make it, even though we know that is untrue? they don't care about truth. And what if he has it also? There is nothing in the Constitution for this scenario in terms of what it means for the election, although that means nothing to GOP. Chain of succession is outlined, but not what happens when it's in the middle of an election. And quite a few have already voted.

David Plouffe just now on Chris Hayes.

Would be a very different dynamic. Steve Scully is used to handling all kinds of people on C-span. Very curious to see how he will deal with whatever happens, if it happens.