In part, sure. But it's also a failure of the voting public - primarily by not showing up to vote. The historic trend of low voter turnout got us to where we are today since it has enabled a minoritarian party with interests contrary to the vast majority of their constituents to win elections and shape the political landscape in ways that favor them.

It's also a systemic failure since the US makes voting about as difficult as they can - but, again, that is mainly the fault of Republicans who have crusaded for years to repress the votes of minorities, women, and basically anyone who isn't old and white.

It's easy to blame the dems because they should have defended better, backed more pro-worker policies, etc. But if all eligible voters voted, basically no Republicans would ever win elections in this country. Maybe then we could have some actual progress attacking dems from the left.