They don’t care if it works. The point is that they want to be in charge.
All of the democrat congresscritters and Presidential candidates are pandering to their far left wing base. I suspect that many of them know, but will never admit, that they are going to lose BIGLY in the 2020 elections.
What most of the far left wing democrat voters cannot seem to grasp is that the 2020 election will not be won or lost by firing up the left fringe base. The election will be decided by all of those middle class and blue collar voters in flyover country who now have jobs and can feed their families without food stamps for the first time in years. This includes a lot of black and hispanic voters who have never voted for anyone but democrats before but now see unemployment among blacks and hispanics at the lowest levels in at least 50 years.
Just like in 2016 but magnified by 10, they will never see the tidal wave coming until it crashes over them.