Gerrymandering is the process of manipulating the boundaries of (an electoral constituency) so as to favor one party or class. When the party controls the state legislature they can redraw their political boundaries to further increase the maximum number of congressional districts they can win. This process isn’t very fair as it changes results of an election in which the states can consistently vote for the same party. This can allow a party to win more electoral seats in spite of having a numerical disadvantage in the population. So for example, a population of 100 people with 40 percent red and 60 percent blue. The red is at a disadvantage ,but with the right boundary drawing they can win majority of the seats in the two districts.

Some argue that the US is the only major democratic power that allows politicians to have an active role in creating voting districts, and it contributes to the divisive nature of American politics. But, as both major parties benefit from gerrymandering, the political will to reform the system doesn’t exist. Both Barack Obama and Tom DeLay have benefited from gerrymandering in their political careers. In spite of a lot of pressure to reform the system to ensure fairer and more competitive elections, as it stands, the problem is set to continue.

i believe that this boundary drawing  technique is kind of silly. Even though it benefits both parties so that it kind of fair, it isn’t completely majority ruling.

https://www.washingtonpost.com/news/wonk/wp/2015/03/01/this-is-the-best-explanation-of-gerrymandering-you-will-ever-see/