This is the first in a series of race rundowns designed to give subscribers a quick snapshot of what's happening in each district in 2020. Throughout the cycle, watch for our detailed analysis of the most closely-fought races in our competitive race overviews. Individual race pages will be updated as developments warrant, and be sure to bookmark our ratings to keep track of the latest changes.

Rating Changes

AZ-01: O'Halleran (D) — Likely D to Lean D AZ-06: Schweikert (R) — Likely R to Lean R

Bottom Lines: Alabama

AL-01: OPEN (Byrne) (R) - Southwest corner: Mobile Solid Republican. Rep. Bradley Byrne is challenging Democratic Sen. Doug Jones in 2020, sparking a competitive March 3 primary and likely GOP runoff on April 14. This Mobile seat has been in GOP hands since 1964 - longer than any other in Alabama - and has traditionally elected a business-minded Republican who has secured federal support for the district's defense and aerospace interests, including Airbus.

The initial GOP field former state Sen. Bill Hightower, Mobile County Commissioner Jerry Carl, state Rep.

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