Undoubtedly Republicans have done untold damage to the US. However not all Democrats made the right choices either as it was Clinton who set the stage for further breaking the US economy, opening wide open the gates to complete offshoring (and DMCA, etc).

In general its a game between the people who love their own power/money and hate US citizens (most Republicans and many Democrats) vs people who don't hate the people they're supposed to represent (Socialist Democrats and a handful of Republicans).