No of course I can't blame them because it's the only thing that makes sense to do. That's what I saying. I blame the people who won't vote for Dems if they don't perfectly align with everything they want or don't pass their purity test.

Magats took over the Republican party because they consistently voted for whichever R won the primary, even if it wasn't the one they wanted to win the primary. R's have always done this, but Magats especially have been turning out to do this since 2008 when gasp! the Black guy won (they started out as the Tea party). On top of that they did a lot of activism. Parading around with their guns was the part they liked best about that. They took a name for their movement; the TEA (taxed enough already) party was a stupid name and they looked like idiots with their teabags, but it worked for them and they eventually got their demagogue.

The Democratic party can be moved to the left with this same strategy. Vote for the more left-leaning or whoever you like best in the primary, then vote for whoever has the D by their name in the general. When they learn that they can actually count on getting enough votes from their base, they'll stop futilely chasing votes from the right. At the same time you have to do activism and keep the movement growing, which makes sure they clearly know what you want and creates pressure to influence their policies. You don't give up after one election cycle because it takes time and work..

Ceding your power by not voting doesn't make politicians care about you--it's not like boycotting a business that wants to sell you something. Politicians want to please those who vote for them, not those who don't. Learn from the magats. First you put the politicians closer to your views into power, then keep pressuring them to enact the policies you want. Not sit around and wait for them to enact the agenda you want first and after that you'll vote for them. Think about how training a dog works.