Gerrymandering is the act of drawing districts in such a way that you capture voters of the same party, which ensures a representative of that party for that district. But, Gerrymandering is not a problem by the senate because they are being elected to serve specific districts rather than the entire states. Gerrymandering is an act used by the politicians in manipulating the district lines aiming to help their friends in other districts or have an advantage over their enemies.
Hope this Helps ;)
Gerrymandering is the act of drawing districts in such a way that you capture voters of the same party, which ensures a representative of that party for that district. But, Gerrymandering is not a problem by the senate because they are being elected to serve specific districts rather than the entire states.