The United States
Wesberry v. Sanders ruling
All congressional districts must have roughly equal populations, as determined by the decennial census. Furthermore, they must be contiguous, meaning that all parts of the district must be connected to each other. Finally, they must adhere to any additional requirements and restrictions set forth by state laws and/or court decisions.
In states with more than one congressional district, the Representative does not need to be a resident of the district, but he/she does need to be a resident of the state that includes the district.
Representatives and Senators need only to be representatives of the State which they will represent, not the congressional district (for representatives). See Article I of the Constitution.
Congressional Record
No matter where the lines are drawn, some groups and interest are benfited while others are harmed. Nonetheless, many states continued to draw congressional district lines that favored rural over urban areas. In Wesberry vs. Sanders (1964) the Supreme Court adopted the rule od "one person, one vote." Congressional district lines now must be drawn on the basis of population after each 10 year census. According to the Court, the population in each district must be mathmatically equal to other districts in the state. Gerrymandering remains a fact of American political life.
The only residency specification the U.S. Constitution makes regarding U.S. Representatives is that when elected he/she must be a resident of the state wherein is located the congressional district to be represented. U.S. citizenship for a minimum of seven years is also required, but it is possible to be a U.S. citizen without being a U.S. resident.
Congressional districts must have nearly the same number of residents. This can't be exact because districts are reapportioned after the census every ten years.
Depending on the population of each state. They are divided into congressional district which each contain around 650000 people. There is one representative for each congressional district. No matter how small the population is though, there must be at least one representative for each state. Currently in 2009 there are 345 representatives in the house of representatives and 100 senators in the senate.
A person must be at least twenty-five years of age Have been a citizen of the Unites States for at least seven years Live in the state he is elected to represent. In any state having more than one representative, except New Mexico or North Dakota, he must live in the district of the state he is representing
districts must be equally populated. lines must be contiguous or connected. redistricting cannot dilute minority voting strength. district lines cannot be drawn solely based upon race. districts must be compact. communities of interest must be protected.
Wesberry v. Sanders ruling