Thomas P. O'Neill Jr.
Last held office: U.S. House, MA-8 (1976–1986). Ran in 5 elections between 1976 and 1984, winning 5.
- Last margin
- +83.7
- Won 1984
- Elections
- 5
- 1976–1984
Source: Wikidata, congress-legislators and Open States; 99chambers legislative records
Career
Offices held, and every time O'Neill was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.
Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Every race O'Neill has run
Margin: how far O'Neill finished ahead of (+) or behind (−) the runner-up.
| Year | Office | Stage | Result | Opponents | Share | Margin | Raised |
|---|---|---|---|---|---|---|---|
| 1984 | U.S. House, MA-8 | General | Won | Laura Ross (COM) | 91.8% | D+83.7 | $276.2K |
| 1982 | U.S. House, MA-8 | General | Won | Frank Luke McNamara Jr. (R) | 74.9% | D+49.8 | $539.3K |
| 1980 | U.S. House, MA-8 | General | Won | William A. Barnstead (R) | 78.4% | D+56.8 | $67.8K |
| 1978 | U.S. House, MA-8 | General | Won | William A. Barnstead (R), Laura Ross (COM) | 74.6% | D+53.7 | — |
| 1976 | U.S. House, MA-8 | General | Won | William A. Barnstead (R), Florenzo Di Donato (I), Leo F. Kahian (I) | 74.4% | D+55.7 | — |
Source: 99chambers results archive
Campaign money, 1983–84
- Raised
- $276.2K
- Spent
- $213.5K
- Cash
- $89.3K
Source: FEC filings through Dec 31, 1984Updated Nov 9, 2026, 3:00 AM ET
Seats O'Neill has held
- U.S. House, MA-8 · 1976–1986
Source: 99chambers results archive
Who O'Neill has run against
- Laura Ross (COM) · 1984 election, won
- Frank Luke McNamara Jr. (R) · 1982 election, won
- William A. Barnstead (R) · 1980 election, won
Source: 99chambers results archive
How we know O'Neill
One person, matched across every source we use.
- FEC H6MA08042
Source: Identity links: Wikidata, congress-legislators, Open States, FEC