primary
v.— «Most lawmakers represent safe districts, giving them little incentive to tack to the center and work together. Indeed, many incumbents worry more about “being primaried,” as they put it, drawing a primary challenge from within their own parties for being insufficiently orthodox.» —“Tom Davis Gives Up” by Peter Baker New York Times Oct. 5, 2008. (source: Double-Tongued Dictionary)
Further reading
In the military, if you’ve lost the bubble, then you can’t find your bearings. The term first referred to calibrating the position of aircraft and submarines. • The phrase the coast is clear may originate in watching for invaders...
A woman in Vancouver, Washington, wants to know the origin of the phrase the coast is clear, meaning “it’s safe to proceed.” It most likely has to do with a literal coast, whether from the perspective of a ship at sea or guards...