Pollsters · Updated Oct 17, 2026
Harvard/Harris Poll/HarrisX
18 public polls in the 2026 cycle of the generic congressional ballot. Latest: Sep 28, 2026.
- Polls
- 180 in 0 races · 18 generic ballot
- 538 rating
- —Not rated by 538
- House effect
- R+3.2Against other polls, in today's forecast
Its polls run 3.2 points more Republican than other polls of the same races; the forecast removes that before averaging.
Generic congressional ballot
Which party voters would back for the House. The national House forecast.
| Dates | Sample | Dem. | Rep. | Margin | Source |
|---|---|---|---|---|---|
| Sep 26–Sep 28 | 2,200 RV | 50 | 50 | Even | harvardharrispoll.com ↗ |
| Sep 26–Sep 28 | — LV | 51 | 49 | D+2 | harvardharrispoll.com ↗ |
| Aug 28–Aug 30 | 2,100 RV | 51 | 49 | D+2 | harrisx.com ↗ |
| Aug 28–Aug 30 | — LV | 49 | 51 | R+2 | harrisx.com ↗ |
| Jul 11–Jul 12 | 1,776 RV | 50 | 50 | Even | harvardharrispoll.com ↗ |
| Jul 11–Jul 12 | — LV | 51 | 49 | D+2 | harvardharrispoll.com ↗ |
| May 29–May 31 | 1,725 RV | 51 | 49 | D+2 | harvardharrispoll.com ↗ |
| May 29–May 31 | — LV | 52 | 48 | D+4 | harvardharrispoll.com ↗ |
| Apr 23–Apr 26 | 2,745 RV | 50 | 50 | Even | harvardharrispoll.com ↗ |
| Apr 23–Apr 26 | — LV | 50 | 50 | Even | harvardharrispoll.com ↗ |
| Mar 25–Mar 26 | 2,009 RV | 51 | 49 | D+2 | harvardharrispoll.com ↗ |
| Mar 25–Mar 26 | — LV | 52 | 48 | D+4 | harvardharrispoll.com ↗ |
| Feb 25–Feb 26 | 1,999 RV | 50 | 50 | Even | harvardharrispoll.com ↗ |
| Feb 25–Feb 26 | — LV | 50 | 50 | Even | harvardharrispoll.com ↗ |
| Jan 28–Jan 29 | 2,000 RV | 54 | 46 | D+8 | harvardharrispoll.com ↗ |
| Jan 28–Jan 29 | 2,000 RV | 41 | 41 | Even | harvardharrispoll.com ↗ |
| Jan 28–Jan 29 | — LV | 52 | 48 | D+4 | harvardharrispoll.com ↗ |
| Jan 28–Jan 29 | — LV | 47 | 44 | D+3 | harvardharrispoll.com ↗ |