Politics in Britain is characterized by a confrontation between the Conservative Party and the Labor Party. Each has its own policy platform, and voters choose between them, forcing changes in government. Likewise in the United States, the Republican and Democratic Parties alternate in power, running the government to meet citizens's wishes.
The tension generated by the confrontation of two parties gives vitality to U.S. politics. This tension is rooted in the principle that no president can serve more than two terms, or eight years.
In contrast, there is no limit to the number of terms a Japanese prefectural governor can serve; some have been re-elected to three, four or even five terms. This causes complacency on the part of both the governor and voters, making it impossible to implement good politics. Prefectural governors should be limited to two terms.