Campaigning began Friday for the Tokyo metropolitan assembly election, with the capital's police stepping up measures to thwart possible lone-wolf attacks after incidents involving notable politicians in recent years.Top politicians are set to converge on Tokyo for a close contest seen as a bellwether for the national House of Councillors election this summer, in which the ruling Liberal Democratic Party is expected to struggle."We are mobilizing the organization's full strength. We cannot create conditions that allow for the 'unexpected,'" a senior official of the Metropolitan Police Depar…READ FULL ARTICLE