Which of these hypothetical Democratic tickets would perform better in 2020?

[henster]

Klobucahar/Bullock. 

I’m concerned about Kamala’s electability nationwide, even with Brown as her running mate.  Take a look at how she underformed in California’s AG election back in 2010.

Agree, Harris was the worst performing Dem in that year and she didn't even have an Republican opponent in 2016. I'm less than impressed by her electoral performance, any candidate from Cali especially SF is just going to be painted as a coastal elitist. Meanwhile Klobuchar wins landlines in a pretty polarized state while Bullock pulled off impressive wins a red state.

[henster]

Bullock pulled off impressive wins a red state.

Actually, his 4-point victory in 2016 was very underwhelming when you compare it to the absolute landslide margins Schweitzer, Racicot, Schwinden, Lee Judge, etc. won their reelection by.

Anyway, Booker/Cortez-Masto would be my pick.

Schweitzer was running in a year when Obama barely lost the state. Bullock overcome Hillary losing the state by 20 points and while being outspend heavily by Gianforte. And Schweitzer only won by 4 points in 2004 when Bush was carrying the state by 20.