Will Democrats get complacent if they win big in 2018?

[Statilius the Epicurean]

The democrats winning the house is the best thing that could happen to Trump's chances for 2020 reelection....

I love how this narrative is beginning to crystallise among Trump supporters. Losing is good, guys! It means we're winning!

[Del Tachi]

Democrats narrowly capture the House in 2018, learn all the wrong things in the process, and then lose narrowly to Trump in 2020.

What do you think they'd learn, and what do you think they "should" learn?

They'll win the House by electing a lot of Josh Gottheimer clones in Romney-Clinton districts, then they'll nominate a Booker or Harris type in 2020 who will come up short in PA, MI, WI, etc. 

[Yank2133]

The democrats winning the house is the best thing that could happen to Trump's chances for 2020 reelection....

I love how this narrative is beginning to crystallise among Trump supporters. Losing is good, guys! It means we're winning!

They are in denial.

Democrats winning the house means actually oversight on the Trump administration. That isn't going to end well for the President.

[IceSpear]

They'll get complacent even if they lose big. See 2014 and 2016.

Also this. Hacks will be hacks.

But considering how cocky this forum is even after these crushing losses, I can only imagine how cocky they'll be for 2020 if 2018 really does end up being a big Dem wave.

[Zaybay]

The answer is no. The whole reason 2018 is becoming a massive wave is because of their opposition to Trump, and I doubt many Democrats will call it a day after winning big in 2020. There may be a case for 2022, but I cant be sure on the factors of such an election this far out.

Also:

Democrats narrowly capture the House in 2018, learn all the wrong things in the process, and then lose narrowly to Trump in 2020.

What do you think they'd learn, and what do you think they "should" learn?

They'll win the House by electing a lot of Josh Gottheimer clones in Romney-Clinton districts, then they'll nominate a Booker or Harris type in 2020 who will come up short in PA, MI, WI, etc.  

So far, only 8 candidates are similar Josh Gottheimer who are in lean D or tossup districts, 9 if you count Case. The rest are much closer to Sanders, Harris, Warren, Gillibrand, the left and center-left of the party, not the conservative side of it. In fact, your example would be Dems taking the right lesson from 2018.