Gerrymandering is the practice of drawing up congressional districts to include specific registered voters and exclude others. Candidates pick their voters rather than voters picking their representative. Some districts are shaped like earmuffs, barbells, even worms, due to trying to include or exclude specific groups from a specific voting block.
By instituting a grid system, allowing for population numbers to decide size of the area rather than party affiliation, all states would use a grid-like approach when drawing up congressional districts. All districts would have more rectangular shapes on a map and in turn include all citizens that live in a specific region. This would end the grid lock in Washington and allow voters to take back the democratic process.