Battleground Tracker: All our latest midterm race ratings

In partnership with YouGov, the CBS News 2018 Battleground Tracker polls voters across the country, focusing on competitive congressional races. 

We use a statistical model to come up with a rating for each race and to estimate how many seats each party is favored to win, incorporating both what voters tell us and the characteristics of their district. 

To estimate races, CBS News uses one of four ratings:

• TOSS UP: neither party has a distinct advantage
• EDGE: one party has a small advantage, either in recent polling or a slight structural advantage
• LEAN: one party has an advantage, polling with a consistent lead
  
• LIKELY: one party has a clear advantage, polling consistently outside the margin of error

Check back here often for our latest ratings of races across the country. 

And be sure to tune in Sunday for "Face the Nation" as we wonk out over all the latest results from the CBS News 2018 Battleground Tracker. 

Latest House ratings

Last updated November 5, 2018 (jump to Senate ratings)

Below descriptions of House districts adapted from "The Almanac of American Politics," as published online by National Journal.

Toss Up Races

• CALIFORNIA 10
  Rating: TOSS UP
  Incumbent: Rep. Jeff Denham (R)
  District: Central Valley, Modesto, Tracy
• CALIFORNIA 39
  Rating: TOSS UP
  Incumbent: Rep. Ed Royce (R) (not seeking re-election) 
  District: Northern Orange County, Fullerton, Yorba Linda 
• CALIFORNIA 48
  Rating: TOSS UP
  Incumbent: Rep. Dana Rohrabacher (R)
  District: Coastal Orange County, Huntington Beach 
• FLORIDA 26
  Rating: TOSS UP
  Incumbent: Rep. Carlos Curbelo (R)
  District: Homestead and the Florida Keys 
• ILLINOIS 14
  Rating: TOSS UP
  Incumbent: Rep. Randy Hultgren (R)
  District: Chicago Exurbs, Kendall County 
• IOWA 3
  Rating: TOSS UP
  Incumbent: Rep. David Young (R)
  District: Southwest, Des Moines 
• MAINE 2
  Rating: TOSS UP
  Incumbent: Rep. Bruce Poliquin (R)
  District: Northern Maine, Lewiston, Bangor 
• MICHIGAN 8
  Rating: TOSS UP
  Incumbent: Rep. Mike Bishop (R)
  District: Central, Lansing, Detroit Exurbs 
• NEBRASKA 2
  Rating: TOSS UP
  Incumbent: Rep. Don Bacon (R)
  District: Omaha 
• NEW JERSEY 3
  Rating: TOSS UP
  Incumbent: Rep. Tom MacArthur (R)
  District: South Central, Pine Barrens 
• NEW JERSEY 7
  Rating: TOSS UP
  Incumbent: Rep. Leonard Lance (R)
  District: North Central 
• NEW YORK 19
  Rating: TOSS UP
  Incumbent: Rep. John Faso (R)
  District: Northern Hudson Valley, the Catskills 
• NEW YORK 22
  Rating: TOSS UP
  Incumbent: Rep. Claudia Tenney (R)
  District: Central, Utica, Binghamton 
• NORTH CAROLINA 9
  Rating: TOSS UP
  Incumbent: Rep. Robert Pittenger (R) (not seeking re-election)  
  District: Charlotte Suburbs 
• PENNSYLVANIA 1
  Rating: TOSS UP
  Incumbent: Rep. Brian Fitzpatrick (R)
  District: South and Central Philadelphia 
• TEXAS 7
  Rating: TOSS UP
  Incumbent: Rep. John Culberson (R)
  District: West Houston and Suburbs 
• TEXAS 32
  Rating: TOSS UP
  Incumbent: Rep. Pete Sessions (R)
  District: North Dallas 
• VIRGINIA 2
  Rating: TOSS UP
  Incumbent: Rep. Scott Taylor (R)
  District: Hampton Roads, Virginia Beach, Part of Norfolk 
• VIRGINIA 7
  Rating: TOSS UP
  Incumbent: Rep. Dave Brat (R)
  District: Central, Richmond Suburbs  
  

Edge Democrat or Republican

• CALIFORNIA 25 
  Rating: EDGE DEMOCRAT
  Incumbent: Rep. Steve Knight (R) 
  District: Southern California, Santa Clarita 
• CALIFORNIA 45
  Rating: EDGE DEMOCRAT
  Incumbent: Rep. Mimi Walters (R)
  District: Orange County, Irvine 
• ILLINOIS 6
  Rating: EDGE DEMOCRAT
  Incumbent: Rep. Peter Roskam (R)
  District: Chicago West Suburbs, Wheaton, Palatine 
• KANSAS 2
  Rating: EDGE REPUBLICAN
  Incumbent: Rep. Lynn Jenkins (R) (not seeking re-election) 
  District: Eastern, Topeka 
• KENTUCKY 6
  Rating: EDGE REPUBLICAN
  Incumbent: Rep. Andy Barr (R)
  District: Central Kentucky, Lexington 
• MINNESOTA 1
  Rating: EDGE REPUBLICAN
  Incumbent: Rep. Tim Walz (D) (not seeking re-election) 
  District: South, Rochester 
• MINNESOTA 2
  Rating: EDGE DEMOCRAT
  Incumbent: Rep. Jason Lewis (R)
  District: Twin Cities' South Suburbs 
• MINNESOTA 3
  Rating: EDGE DEMOCRAT
  Incumbent: Rep. Erik Paulsen (R)
  District: Twin Cities' West Suburbs 
• NEW HAMPSHIRE 1 
  Rating: EDGE DEMOCRAT
  Incumbent: Rep. Carol Shea-Porter (D) (not seeking re-election) 
  District: Eastern New Hampshire, Manchester 
• NEW MEXICO 2 
  Rating: EDGE REPUBLICAN 
  Incumbent: Rep. Steve Pearce (R) (not seeking re-election)
  District: Southern New Mexico, Las Cruces 
• OHIO 1 
  Rating: EDGE REPUBLICAN
  Incumbent: Rep. Steve Chabot (R) 
  District: Cincinnati 
• UTAH 4 
  Rating: EDGE REPUBLICAN
  Incumbent: Rep. Mia Love (R) 
  District: Central, Southern Salt Lake City Suburbs 
• WASHINGTON 8
  Rating: EDGE DEMOCRAT
  Incumbent: Rep. David Reichert (R) (not seeking re-election) 
  District: East Seattle Suburbs, Auburn    
  

Lean Democrat or Republican

• ARKANSAS 2 
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. French Hill (R) 
  District: Central Arkansas, Little Rock 
• CALIFORNIA 21 
  Rating: LEAN REPUBLICAN 
  Incumbent: Rep. David Valadao (R) 
  District: Central Valley, Kings County 
• COLORADO 6
  Rating: LEAN DEMOCRAT
  Incumbent: Rep. Mike Coffman (R)
  District: Denver Suburbs, Aurora 
• FLORIDA 15
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Dennis Ross (R) (not seeking re-election) 
  District: Central, Lakeland 
• FLORIDA 27 
  Rating: LEAN DEMOCRAT 
  Incumbent: Rep. Ileana Ros-Lehtinen (R) (not seeking re-election) 
  District: Southern Miami and Coral Gables 
• GEORGIA 6 
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Karen Handel (R)
  District: Atlanta Suburbs, Sandy Springs, Roswell 
• ILLINOIS 12
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Mike Bost (R)
  District: Southwest Illinois, East St. Louis, Carbondale 
• ILLINOIS 13 
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Rodney Davis (R) 
  District: Central Illinois, Champaign, Springfield 
• IOWA 1
  Rating: LEAN DEMOCRAT
  Incumbent: Rep. Rod Blum (R)
  District: Northeast, Cedar Rapids, Dubuque 
• KANSAS 3 
  Rating: LEAN DEMOCRAT 
  Incumbent: Rep. Kevin Yoder (R) 
  District: Greater Kansas City 
• MICHIGAN 6
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Fred Upton (R)
  District: Southwest, Kalamazoo
• MICHIGAN 11 
  Rating: LEAN DEMOCRAT 
  Incumbent: Rep. Dave Trott (R) (not seeking re-election)
  District: Detroit Suburbs, Livonia, Troy 
• MINNESOTA 8 
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Rick Nolan (D) (not seeking re-election) 
  District: Northeast, Duluth 
• NEW JERSEY 2
  Rating: LEAN DEMOCRAT
  Incumbent: Rep. Frank LoBiondo (R) (not seeking re-election) 
  District: South Jersey Shore, Atlantic City 
• NEW JERSEY 11
  Rating: LEAN DEMOCRAT
  Incumbent: Rep. Rodney Frelinghuysen (R) (not seeking re-election) 
  District: North New Jersey, Morris County 
• NEVADA 3
  Rating: LEAN DEMOCRAT
  Incumbent: Rep. Jacky Rosen (D) (not seeking re-election) 
  District: Las Vegas Suburbs, Henderson 
• NEVADA 4
  Rating: LEAN DEMOCRAT
  Incumbent: Rep. Ruben Kihuen (D)
  District: Central, Las Vegas Suburbs
• NEW YORK 11
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Dan Donovan (R) 
  District: Staten Island, South Brooklyn
• NEW YORK 24
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. John Katko (R)
  District: Central, Syracuse 
• NORTH CAROLINA 13 
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Ted Budd (R) 
  District: Eastern, Raleigh Suburbs 
• OHIO 12 
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Troy Balderson (R) 
  District: Columbus Suburbs, Mansfield 
• PENNSYLVANIA 7 
  Rating: LEAN DEMOCRAT
  Incumbent: Rep. Charlie Dent (R) (not seeking re-election)
  District: Philadelphia Suburbs, Delaware County 
• PENNSYLVANIA 8
  Rating: LEAN DEMOCRAT
  Incumbent: Rep. Matt Cartwright (D)
  District: Philadelphia Suburbs, Bucks County 
• PENNSYLVANIA 10
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Scott Perry (R)
  District: Northeast, Williamsport 
• TEXAS 23
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Will Hurd (R)
  District: Suburbs of San Antonio and El Paso 
• VIRGINIA 10
  Rating: LEAN DEMOCRAT
  Incumbent: Rep. Barbara Comstock (R)
  District: Northern Virginia, Leesburg, McLean 
• WASHINGTON 3
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Jaime Herrera Beutler (R)
  District: Southwest, Vancouver 
• WASHINGTON 5
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Cathy McMorris Rodgers (R)
  District: Eastern, Spokane 
• WEST VIRGINIA 3
  Rating: LEAN REPUBLICAN
  Incumbent: Rep. Evan Jenkins (R)
  District: Southern, Huntington    
  

Likely Democrat or Republican

• ARIZONA 2
  Rating: LIKELY DEMOCRAT
  Incumbent: Rep. Martha McSally (R) (not seeking re-election) 
  District: Southeast Arizona, Tucson 
• CALIFORNIA 49 
  Rating: LIKELY DEMOCRAT 
  Incumbent: Rep. Darrell Issa (R) (not seeking re-election)  
  District: San Diego County, San Clemente 
• PENNSYLVANIA 5
  Rating: LIKELY DEMOCRAT
  Incumbent: Rep. Pat Meehan (R) (not seeking re-election) 
  District: North Central, State College 
• PENNSYLVANIA 6
  Rating: LIKELY DEMOCRAT
  Incumbent: Rep. Ryan Costello (R) (not seeking re-election) 
  District: Southeast, Chester County 
• PENNSYLVANIA 17
  Rating: LIKELY DEMOCRAT
  Incumbent: Rep. Keith Rothfus (R)
  District: Scranton, Wilkes-Barre

Latest Senate ratings

Last updated October 29, 2018 (jump to House ratings)

Toss Up Races

• FLORIDA
  Rating: TOSS UP
  Incumbent: Sen. Bill Nelson (D) 
• MISSOURI
  Rating: TOSS UP
  Incumbent: Sen. Claire McCaskill (D) 
• NEVADA
  Rating: TOSS UP
  Incumbent: Sen. Dean Heller (R)  

Edge Democrat or Republican

• ARIZONA
  Rating: EDGE DEMOCRAT
  Incumbent: Sen. Jeff Flake (R) (not seeking re-election) 
• INDIANA 
  Rating: EDGE REPUBLICAN 
  Incumbent: Sen. Joe Donnelly (D) 
• MONTANA
  Rating: EDGE DEMOCRAT
  Incumbent: Sen. Jon Tester (D) 
• NORTH DAKOTA
  Rating: EDGE REPUBLICAN
  Incumbent: Sen. Heidi Heitkamp (D) 
• WEST VIRGINIA
  Rating: EDGE DEMOCRAT
  Incumbent: Sen. Joe Manchin (D)  
  

Lean Democrat or Republican

• MINNESOTA (SPECIAL)
  Rating: LEAN DEMOCRAT
  Incumbent: Sen. Tina Smith (D) 
• OHIO
  Rating: LEAN DEMOCRAT
  Incumbent: Sen. Sherrod Brown (D) 
• TENNESSEE
  Rating: LEAN REPUBLICAN
  Incumbent: Sen. Bob Corker (R) (not seeking re-election) 
• TEXAS
  Rating: LEAN REPUBLICAN
  Incumbent: Sen. Ted Cruz (R)  
  

Likely Democrat or Republican

• CALIFORNIA
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Dianne Feinstein (D) 
• CONNECTICUT
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Chris Murphy (D) 
• DELAWARE
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Tom Carper (D) 
• HAWAII
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Mazie Hirono (D) 
• MAINE
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Angus King (D) 
• MARYLAND
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Ben Cardin (D) 
• MASSACHUSETTS
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Elizabeth Warren (D) 
• MICHIGAN
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Debbie Stabenow (D) 
• MINNESOTA
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Amy Klobuchar (D) 
• MISSISSIPPI
  Rating: LIKELY REPUBLICAN
  Incumbent: Sen. Roger Wicker (R) 
• MISSISSIPPI (SPECIAL)
  Rating: LIKELY REPUBLICAN
  Incumbent: Sen. Cindy Hyde-Smith (R) 
• NEBRASKA
  Rating: LIKELY REPUBLICAN
  Incumbent: Sen. Deb Fischer (R) 
• NEW JERSEY
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Bob Menendez (D) 
• NEW MEXICO
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Martin Heinrich (D) 
• NEW YORK
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Kirsten Gillibrand (D) 
• PENNSYLVANIA
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Bob Casey (D) 
• RHODE ISLAND
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Sheldon Whitehouse (D) 
• UTAH
  Rating: LIKELY REPUBLICAN
  Incumbent: Sen. Orrin Hatch (R) (not seeking re-election) 
• VERMONT
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Bernie Sanders (D) 
• VIRGINIA
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Tim Kaine (D) 
• WASHINGTON
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Maria Cantwell (D) 
• WISCONSIN
  Rating: LIKELY DEMOCRAT
  Incumbent: Sen. Tammy Baldwin (D) 
• WYOMING
  Rating: LIKELY REPUBLICAN
  Incumbent: Sen. John Barrasso (R)