The Daily Kos Elections Morning Digest is compiled by David Nir, Jeff Singer, Stephen Wolf, and Carolyn Fiddler, with additional contributions from David Jarman, Steve Singiser, Daniel Donner, James Lambert, David Beard, and Arjun Jaikumar. Leading Off ● AZ-Sen: In a major surprise, Arizona Sen. Jeff Flake announced on Tuesday that he would not seek re-election next year.