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.
On to Democracy. The establishment of Parliament allowed a few high ranking noblemen to vote, but did little for the average English subject. By 1780, fewer than 3 percent of the English population was allowed to vote. The right to vote was granted to larger segments of the population three times in the 19th century as the result of the Reform Acts. The first, in 1832, granted greater representation in Parliament to England's growing cities and urban centers.