2007 special election for Massachusetts's 5th District
U.S. House · Massachusetts
Niki Tsongas (D) won with 51.3% of the vote, defeating Jim Ogonowski (R) by 6.2 points.
Source: Federal Election CommissionUpdated Oct 3, 2026, 3:20 AM ET
The seat over time
D − R margin in this seat's races around 2007
Races before and after
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)
Money in this race
Each line compares the two campaigns on one scale.
Other candidates' campaigns: Kurt Hayes $24.5K.
Campaign money: FEC, through Mar 31, 2008.
Source: FEC campaign filingsUpdated Mar 31, 2008
Polls against the result
- Poll with Tsongas ahead
- Poll with Ogonowski ahead
- Result
| Pollster | Dates | Sample | Tsongas | Ogonowski | Margin | Adjusted | Miss vs result | Grade | Release |
|---|---|---|---|---|---|---|---|---|---|
| SurveyUSA | Oct 9 | 457 | 51 | 42 | D+9 | — | +2.8 | A | Wikipedia |
| SurveyUSA | Sep 8 | 411 | 51 | 41 | D+10 | — | +3.8 | A | Wikipedia |
Adjusted: after correcting for the pollster's house effect and likely-voter screens. Miss: the poll's margin minus the result; + means the poll leaned Democratic. Grade: the pollster's accuracy in past elections, A+ to D (pollster ratings).
Source: Each poll's release, via FiveThirtyEight poll listsUpdated Oct 9, 2007
The candidates
Also on the ballot: Patrick O. Murphy (Independent), 2.0%; Kurt Hayes (Independent), 1.1%; Kevin Thompson (Constitution), 0.5%