The key difference between Republicans and Democrats is Republicans think every day is July 4th and Democrats think every day is April 15th.

Infrastructure is a politician's kryptonite. It's really hard to bring up because it's not as glamour as healthcare or immigration. People don't care, despite it being one of the most important aspect of governing, except when a construction project is finished or a bridge collapses.

The obvious (and Vegas betting favorite) is Joe Biden.

Although, some notes: Warren would get demolished in an nationwide election. She's not likeable at all.
Beto did extremely well, but Cruz is not beloved. He is not at all respected and it showed as the governor's race was a blowout while Cruz only won by 3 points.

Apparently, she can't even be Vice President either. But she'll be able to run in 2024. The unfortunate thing is the Republican Party has already begin their attack campaign on her, similar to Elizabeth Warren they can effectively make her look like a terrible person to the sub-90 IQ crowd.

I wanted Bernie to represent the Democrats in 2016, but we got crooked Hillary instead and... yeah, look how that turned out.
So, if Bernie decided to run again, of course he'd get my vote. If not, then it would go to Beto if he decides to run.

Too bad that Richard Ojeda lost but he was running on a more progressive platform then Beto O'Rourke in a more conservative state so the outcome was somewhat expected. 

Even though Abbott won by more then a million votes I would call his victory a blowout since Lupe Valdez wasn't  serious competition and she still managed to get a bit over 42% off all the votes.

Personally I would support Bernie. I think he's just smarter than other politicians, and/or actually uses reason. He's been on the right side of a lot of issues (deregulation that led to recession, war in Iraq), that a lot of others either just didn't see clearly, or went against sense for political purposes.

As for who they should run (if winning is the only criteria)... I dunno. It's possible that someone like Bernie could take some of the "anti-establishment" sentiment away from Trump. But at the same time, he might alienate some of the more mainstream moderates.

I kind of think that all the democrats really need is someone scandal free that can pass as a moderate. I'm pretty sure if it wasn't for the baggage (emails/Benghazi whether those were valid criticisms or not), Hillary would have easily won. She's ultimately a fairly moderate democrat. So, I think if they could find another fairly moderate democrat without that baggage, I think it should be an easy win. Biden may fit the bill, but I don't know if the ties to Obama will be a help or a hindrance. Obama is obviously still among the most popular democrats, and still hated by the right, but I don't really know how moderates view him, and if that view is more favorable now than it was two years ago.

I think after what has been and seemingly will continue to be a chaotic presidency, I think someone low key and stable may be very attractive. It's like after having that fling with the bad boy on the motorcycle (the most flattering comparison I'll ever make for Trump) you may just want to go with the nice guy who's gonna pay the mortgage on time and pick you up from the airport.

We just need someone sensible and grounded like Neil deGrasse Tyson