Jump to Any Race
Alabama Senate|By Jennifer Duffy, August 7, 2015

A huge campaign war chest, a very red state and seniority in the Senate combine to ensure that Republican Sen. Richard Shelby gets re-elected with ease. In fact, no credible Democrat gives the idea of challenging either of the state’s two U.S. Senators even a passing glance.

Alaska Senate|By Jennifer Duffy, August 7, 2015

As Republican Sen. Lisa Murkowski approaches a campaign for a second full term, the question waiting to be answered is what kind of race will she get? At this point in 2009, it looked as if Murkowski was on a glide path to re-election, but ended up losing the primary to Tea Party candidate Joe Miller and winning re-election as a write-in candidate. It’s hard to fathom that scenario repeating...

FEC Reports|August 7, 2015

Senate FEC reports for the second quarter of the 2016 election cycle are now available. Web Editor Ally Flinn has compiled the chart below that provides the cash-on-hand totals for incumbents, as well as selected U.S. House Members who have announced or who have been mentioned as potential Senate candidates.

Senate Overview|By Jennifer Duffy, June 1, 2015

Arizona: As he gears up to seek a sixth term, Republican Sen. John McCain may have fights on his hands in both the primary and the general election. In 2010, former U.S. Rep. J.D. Hayworth challenged McCain in the GOP primary, arguing that the incumbent is too moderate. McCain prevailed though with 56 percent to 32 percent for Hayworth. McCain won the general election with 59 percent....

Senate Overview|By Jennifer Duffy, May 15, 2015

Indiana: Republicans are currently favored to hold on to this seat being vacated by Sen. Dan Coats at the end of this Congress. Eric Holcomb, Coats’ former chief of staff and a former state party chair, was the first to announce his candidacy and has Coats’ endorsement. U.S. Rep. Marlin Stutzman recently announced that he would also seek the GOP nod. Several other candidates are actively...

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 3 4 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 05:59 PM, Aug 27
  • Race Ratings
    The Cook Political Report's latest ratings for all competitive and potentially competitive Senate seats.
    Updated 03:38 PM, Jun 11
  • 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 06:07 PM, Aug 6
  • 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.
Read More »