Crispety- These are really the goals of gerrymandering. Both parties are guilty of this practice.
When you hear of a district that is so overwhelming tipping to one side, chances are that it was gerrymandered.
There were ballot initiatives in Florida in the last election to limit the ability of using gerrymandering maps and allowing the practice to continue. This would continue to allow the state governments to continue to draw these lines in their favor.It can be frustrating if you live in an area that votes overwhelming against your views everytime.
For example, there was a district in Broward in which the Republicans did not spend any money because the District is so overwhelmingly Democrat that Republicans did not bother to waste their money.
This is the problem with gerrymandering. It also allows the politics of the district to remain status quo and there is really no change because people continue to vote for the same people.
These politicians then take their voters for granted and instead of rewarding voters for their loyalty, they usually underperform because they know they will usually win at the ballot box.