Voting commenced Sunday in Sweden's parliamentary election, which is expected to amount to a tight race between the two main rival blocs in the 349-seat assembly, dpa reported. Prime Minister Fredrik Reinfeldt's centre-right coalition is seeking another four-year term and is challenged by a red-green coalition of Social Democrats, the Green Party and the Left Party. Some 7.1 million people in the country of 9.3 million are eligible to vote. Polling was to take place between 8 am and 8 pm (0600-1800 GMT).