Yes it is a form of rigging an election. I believe they should start from the border and make a straight line until the population is met for the district. And do the same thing next district.
It worked for our Congresswoman. Her district has spread from Toledo eastward along lake Erie over the years and is almost 50 miles long. She hasn't lost an election in 35 years. Fortunately she does a great job representing us. But it is rigging...legally.
I think it is to keep politicians job safe rather than to make one party win over another and it is actually to disadvantage of party of person whose job is safe. I am against it.