DOUG SCHOEN: Far-left Democrats keep saving Republicans from themselves

With the nomination of Graham Platner in Maine on June 9, the Democratic Party’s record of advancing extreme, left-wing progressive candidates for Congress has begun to take full form.

Indeed, Democrats are set to enter the midterm general election cycle potentially with a slate of nominees whose positions and backgrounds may do more to help rescue the GOP than anything Republicans have done or will be able to do for themselves.

Despite an arguably favorable political environment for the Democrats ...