A country once again buffeted by terrorism will go to the polls Thursday in the latest test of the relationship between mass violence, carried out with the most everyday of tools, and democratic debate over security and ties to the outside world.

Saturday’s attack, which left seven people dead, marked the third major terrorist strike in Britain in as many months — the first unfolding steps from Parliament and the second outside a packed pop concert in Manchester. Each was claimed by the Islamic State.

The latest assault, in which three suspects mowed down pedestrians on London Bridge before slashing their way through a nearby market, inserts an unpredictable new dynamic — the fear and uncertainty sowed by terrorism — into this week’s contest, which was already tightening.

Featured image courtesy of Bloomberg News