Keep a tab open to this post on election night, as we'll be using this cheat sheet to keep track of the outcomes in every competitive Senate race. As each race is called, we'll note the winner as well as how the result affects the balance of power (Dem hold, Dem pickup, GOP hold, GOP pickup).
"Rating" refers to Daily Kos Elections'
final competitiveness rating. Italics denote incumbents. The "Race" column is colored according to which party currently controls each seat.