2018 Summary of Candidates
Potential candidate status is based on information from at least two of the following sources: KnowWho Data Services; Campaigns and Elections; House Race Hotline; CQ Politics Daily; Politics1.com; The Hill; Roll Call; Politico; Real Clear Politics; and local newspapers in many states.
State by state listing of potential candidates here.
| U.S. Senate |
| |
D |
R |
Total |
| Incumbents |
11 |
1 |
12 |
| Challengers |
4 |
14 |
18 |
| Running for Open Seat |
4 |
3 |
7 |
| Challenging within Party* |
12 |
- |
12 |
| Total |
31 |
18 |
49 |
| Incumbents Not Running |
- |
- |
- |
| |
|
|
|
| U.S. House** |
| |
D |
R |
Total |
| Incumbents |
56 |
16 |
72 |
| Challengers |
184 |
13 |
197 |
| Running for Open Seat |
55 |
35 |
90 |
| Challenging within Party* |
19 |
12 |
31 |
| Total |
314 |
76 |
390 |
| Incumbents Not Running |
6 |
6 |
12 |
|
Diane Black (R-TN); Michelle Lujan Grisham (D-NM);
Marsha Blackburn (R-TN); Colleen Hanabusa (D-HI);
Lynn Jenkins (R-KS); Martha McSally (R-AZ); Kristi Noem (R-SD);
Jacky Rosen (D-NV); Ileana Ros-Lehtinen (R-FL);
Carol Shea-Porter (D-NH); Kyrsten Sinema (D-AZ);
Niki Tsongas (D-MA)
|
| Governors |
| |
D |
R |
Total |
| Incumbents |
2 |
2 |
4 |
| Challengers |
13 |
3 |
16 |
| Running for Open Seat |
29 |
22 |
51 |
| Challenging within Party* |
4 |
4 |
8 |
| Total |
48 |
31 |
79 |
| Incumbents Term Limited |
- |
2 |
2 |
| Mary Fallin (R-OK); Susana Martinez (R-NM) |
| Lieutenant Governors |
| |
D |
R |
Total |
| Incumbents |
2 |
3 |
5 |
| Challengers |
3 |
2 |
5 |
| Running for Open Seat |
4 |
5 |
9 |
| Challenging within Party* |
4 |
- |
4 |
| Total |
13 |
10 |
23 |
| |
|
|
|
| - - - |
- |
- |
- |
| Other Statewide Offices |
| |
D |
R |
Total |
| Incumbents |
12 |
17 |
29 |
| Challengers |
5 |
4 |
9 |
| Running for Open Seat |
9 |
13 |
22 |
| Challenging within Party* |
1 |
- |
1 |
| Total |
27 |
34 |
61 |
*If candidate wins primary, general election seat status will be "open."
**Does not include 4 incumbent women (Aumua Amata Coleman Radewagen, American Samoa; Eleanor Holmes Norton, District of Columbia; Madeleine Z. Bordallo, Guam; Stacey E. Plaskett, Virgin Islands) and one challenger (Kim R. Ford, District of Columbia) considered candidates for delegate.
