GROZNY, Russia - Against a backdrop of war, squalor and terrorism, Chechens voted Sunday for a replacement for their assassinated president in a vote the Kremlin hopes will bring some stability to the violence-torn region. A man was killed when he attempted to blow up a polling station. Kremlin backing has made Chechnya's top police official, Maj. Gen. Alu Alkhanov, the unquestioned favorite in the race. Russian officials have warned that Chechen rebels might stage attacks to mar the voting — a danger highlighted by the near simultaneous crashes of two jetliners last week that killed 90 people. Traces of...