In a congressional district that has voted for the same part…

In a congressional district that has voted for the same party by double-digit margins in the last five election cycles, the incumbent rarely faces serious challengers, and primary contests are more competitive than general elections. What is this type of district commonly called, and what is one major political consequence of it?

Suppose that you are conducting a study of individuals’ atti…

Suppose that you are conducting a study of individuals’ attitudes towards immigration. You solicit participation over social media (Facebook), and nearly 2,000 individuals respond as your family and friends share the link to your survey with their friends and family. Would this be a scientifically sound study of public opinion on immigration?