Without being too extravagant you can get by with 5000 to 10000 yen per day on lunch and dinner including transportation/subway/rail. That's about $50.00 to $100.00 in American dollars (minimizing taxi usage). Try to avoid the taxi's because that could cost a small fortune, especially in rush hour.
The popular referendum is a device which allows voters to approve or repeal an act of the Legislature. If the Legislature passes a law that voters do not approve of, they may gather signatures to demand a popular vote on the law.
The Conservatives passed a Bill referred to as the Military Voters Act which gave the vote to just the bloc that would support them, the military wives and sisters and when election day came the Conservatives did indeed gain the major of the new women's vote and won the election.