The Problem with the Democrats right now is that they are advertising all of these “new” Democrats (Harris, Baldwin, Duckworth, Gillibrand, Brown ETC.) that no one knows about and are not that good campaigners yes, they may be popular in there own state but they are Really not known beyond that and all they do is Anti Trump, Anti Trump, Anti Trump. If DEMS want to take back the White House in 2020 they need to get someone who is known out there. (Warren, Sanders, Biden ETC.) this is just my opinion, feel free to discuss below.
Whoever becomes the nominee becomes known virtually automatically by virtue of becoming the nominee, so this is not a problem (sane).