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.
Although opposed by politicians from the Deep South, the Voting Rights Act was passed by large majorities in the House of Representatives (333 to 48) and the Senate (77 to 19). The legislation empowered the national government to register those whom the states refused to put on the voting list.