I thought I'd start this because I feel y'all will post graphics, themes, presentations, etc. regarding tonight's election night coverage here. Not only that, I wanted to find out when the networks will be on to deliver their election coverage. However, as I was researching this, I found out that NOT every local station will follow the network's plans as scheduled (you'll see here in this post) so I highly recommend checking with your local station's listings but the majority will be status quo.
This is what I found by checking TV listing sites like TitanTV, TV Passport, etc. (and all in Eastern time so it may differ by timezone as well, depending on where you live)
PBS from 6:00pm-2:00am
CBS from 6:30-11:00pm + 11:35pm-2:00am + for O&Os, a special CBS Mornings at 6:00am on Wednesday (meaning for some like WFOR in my market, they'll air four hours of CBS Mornings from 6:00-10:00am, including the new third hour at 9:00am.).
NBC from 6:30-11:00pm + 11:35pm-5:00am (or 4:30am if local news begins by then) + NBC Nightly News on Wednesday on O&Os and some affiliates from 6:30-7:30pm.
FOX from 7:00-10:00pm + 11:00pm-1:00am (however as an example, my favorite, WSVN 7 will NOT be taking FOX. No surprise there. Instead, they're going all local from 7:00pm-12:30am). However, this was the most inconsistent as some affiliates will rejoin at 11:00pm back to FOX or at midnight or whatnot so its hard to track the FOX side in this area.
ABC from 6:30-11:00pm + 11:35pm-2:00am.
The CW from 8:00-10:00pm (via NewsNation and their coverage. This will be The CW's first time providing election night coverage and major news coverage of this magnitude).
Univision and Telemundo from 6:30-11:00pm + 11:35pm-3:00am (because they have network feeds, they are more consistent in their scheduling than the English-language ones. Plus, the feeds will keep going at 11:00pm while their O&Os and affiliates will go to local news).
As I've said, check your local stations because they may be different than what I've posted here. Just because my local FOX affiliate won't take FOX tonight, doesn't mean yours won't either.