The data gathered by the World Population Review is measured through the Cook Partisan Voting Index, also known as the CPVI.

To understand the effect of a party’s politics on its wallet, consider two swing states where Republicans are falling especially far behind: Arizona and Michigan. In Michigan, the Mackinac ...

In the 31 states and territories that allow registered voters to designate their party affiliation, Democrats outnumber Republicans by more than 11 million citizens.

The Republican Party has been in desperate need of a pragmatic leader who can gauge public opinion, shrewdly husband political capital, and advance the party’s agenda in sustainable ways. That ...