DEVELOPING: Arlington Democrats celebrate another local election sweep

(Updated at 9:35 p.m.) It is another good election night for Arlington Democrats.
While some might have hoped for a Missing Middle-inspired upset in the two-seat Arlington County Board race, Democrats Maureen Coffey and Susan Cunningham have commanding leads over Republican Juan Carlos Fierro and independent Audrey Clement.
All but two Arlington precincts have reported results as of 9 p.m.
There is some evidence of a relatively minor Missing Middle backlash at the ballot box on Election Day: Cu