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Kentucky Senate|By Jennifer Duffy, February 5, 2016

The last 10 days produced two noteworthy events in this race. The first occurred on January 26 when Democrat Jim Gray, the Mayor of Lexington, jumped into the race. It was the last day for candidates to file so to say that Democrats got a candidate at the last minute is not an exaggeration. The second event came Wednesday morning when Republican U.S. Sen. Rand Paul dropped his bid for the GOP...

Senate Overview|By Jennifer Duffy, January 22, 2016

Alabama Senate: Republican Sen. Richard Shelby hasn’t gotten less than 60 percent of the vote since 1992 when he was running for a second term. He won his first Senate race in 1986 with 50 percent. The incumbent’s bid for a sixth term won’t be any different, especially in a presidential election year in deeply red Alabama. Shelby does have to contend with four primary opponents running to his...

Kentucky Senate|By Jennifer Duffy, January 15, 2016

According to polls and his exclusion from the adult table at last night’s Fox Business News debate, it is pretty clear that U.S. Sen. Rand Paul’s quest for the Republican presidential nomination isn’t getting traction. The only question seems to be when Paul will decide to pull the plug on his campaign and turn his attention to another race: his bid for a second term in the U.S. Senate. One...

Kansas Senate|By Jennifer Duffy, December 11, 2015

Regardless of whether Republican U.S. Sen. Jerry Moran gets a competitive race in his bid for a second term, it certainly won’t come close to matching the drama of the Senate race in 2014. In that contest, Moran’s colleague, Sen. Pat Roberts, had a competitive primary and then faced businessman Greg Orman, a well-funded independent candidate, in the general election. Although Roberts ended up...

Idaho|By Jennifer Duffy, December 4, 2015

At least when it comes to elections, Republican Sen. Mike Crapo leads something of a charmed life in that he tends to win with ease.

Senate Dashboard

Seats Up in 2016 Toss Up Lean D Likely D Solid D Seats Up in 2018 Seats Up in 2020
Democrats (45) 10 1 1 1 7 24 11
Republicans (54) 24 4 3 5 12 8 22
Toss Up Lean R Likely R Solid R

Senate Race Ratings Map

Interactive Map


  • At-A-Glance
    A listing of candidates and race ratings in all current Senate races. Updated weekly and printable for on-the-run reference.
    Updated 02:22 AM, Feb 5
  • Race Ratings
    The Cook Political Report's latest ratings for all competitive and potentially competitive Senate seats.
    Updated 09:18 AM, Nov 23
  • General Election Polls
    A selection of public opinion polling in Senate general election contests across the nation.
  • Primary Trial Heats
    A selection of public opinion polling in Senate primary election contests across the nation.
    Updated 08:00 AM, Sep 12
  • FEC Report
    A summary of key financial information filed by Senate candidates with the Federal Election Commission.
    Updated 03:44 PM, Nov 2
  • 2014 Battleground Chart
    2014 Senate Races: Romney Performance vs. Obama Performance
    November 12, 2012
  • 2012 Senate General Election Polls with Final Results
    A collection of polling data from the 2012 cycle, with final general election results included.
  • Two-Term Presidents: Post-WWII Partisan Trends
    Opposing party gains under and following second term presidents.
  • Senate Scatterplot
    The Cook Political Report Senate Scatterplot for Republican and Democratic held states by win percentage and PVI.
  • Senate: 2014 55% and Under Charts
    The chart below displays Senators up for reelection in 2014 who won with less than 55% of the vote in 2008.

Jennifer Duffy, Senior Editor

Jennifer Duffy is Senior Editor for The Cook Political Report, where she is responsible for U.S. Senate and Governors races.
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