| Election Name: | 2006 United States Senate election in Massachusetts |
| Country: | Massachusetts |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2000 United States Senate election in Massachusetts |
| Previous Year: | 2000 |
| Next Election: | 2010 United States Senate special election in Massachusetts |
| Next Year: | 2010 (special) |
| Election Date: | November 7, 2006 |
| Image1: | File:Edward Moore Kennedy.jpg |
| Nominee1: | Ted Kennedy |
| Party1: | Democratic Party (United States) |
| Popular Vote1: | 1,500,738 |
| Percentage1: | 69.30% |
| Nominee2: | Kenneth Chase |
| Party2: | Republican Party (United States) |
| Popular Vote2: | 661,532 |
| Percentage2: | 30.55% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | Ted Kennedy |
| Before Party: | Democratic Party (United States) |
| After Election: | Ted Kennedy |
| After Party: | Democratic Party (United States) |
The 2006 United States Senate election in Massachusetts was held November 7, 2006. Incumbent Democrat Ted Kennedy won re-election to his ninth (his eighth full) term. This would be Kennedy's last election to the Senate; he died three years later of brain cancer, with which he was diagnosed in 2008. Senator Kennedy was the fourth longest-serving Senator in U.S. history, having served for nearly 47 years.
At the Massachusetts Republican Party Convention[1] Kenneth Chase received the official endorsement with a majority of delegates, though both candidates qualified for the September primary. Former White House Chief-of-Staff Andrew Card also received 3 votes.[2]
| Source | Ranking | As of | ||
|---|---|---|---|---|
| align=left | The Cook Political Report[3] | November 6, 2006 | ||
| align=left | Sabato's Crystal Ball[4] | November 6, 2006 | ||
| align=left | Rothenberg Political Report[5] | November 6, 2006 | ||
| align=left | Real Clear Politics[6] | November 6, 2006 |
| Source | Date | MoE | Ted Kennedy (D) | Kenneth Chase (R) | Undecided | |||
|---|---|---|---|---|---|---|---|---|
| align=left | Suffolk University[7] | October 20–23, 2006 | ±4.9% | 60% | 26% | 14% | ||
| align=left | Boston Globe[8] | October 22–25, 2006 | ±4.1% | 66% | 25% | 6% |
Kennedy won every county in the state, winning at least 60% in each county.[9] Kennedy served his ninth, and final, term until his death on August 25, 2009 (here, the completion of John Kennedy's unexpired term is considered to be Ted Kennedy's first term).
| 2006 United States Senate election in Massachusetts (by county) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| County | Kennedy - D % | Kennedy - D # | Chase - R % | Chase - R # | Others % | Others # | Total # | ||
| 60.2% | 63,412 | 37.4% | 39,471 | 2.4% | 2,517 | 105,400 | |||
| 77.3% | 36,135 | 20.1% | 9,382 | 2.6% | 1,231 | 46,748 | |||
| 68.0% | 115,125 | 28.5% | 48,204 | 3.6% | 6,050 | 169,379 | |||
| 74.5% | 5,735 | 22.5% | 1,734 | 3.0% | 230 | 7,699 | |||
| 63.7% | 166,003 | 32.3% | 84,150 | 4.0% | 10,335 | 260,488 | |||
| 74.7% | 21,517 | 22.8% | 6,570 | 2.5% | 715 | 28,802 | |||
| 63.8% | 87,430 | 32.1% | 44,040 | 4.1% | 5,575 | 137,045 | |||
| 73.7% | 41,867 | 23.7% | 13,496 | 2.6% | 1,476 | 56,839 | |||
| 68.7% | 369,685 | 27.9% | 150,257 | 3.4% | 18,502 | 538,444 | |||
| 68.4% | 2,759 | 29.1% | 1,172 | 2.5% | 101 | 4,032 | |||
| 66.0% | 172,766 | 30.2% | 79,087 | 3.7% | 9,793 | 261,646 | |||
| 60.6% | 111,198 | 36.3% | 66,574 | 301% | 5,735 | 183,507 | |||
| 78.3% | 142,018 | 15.9% | 28,753 | 5.8% | 10,494 | 181,265 | |||
| 62.8% | 165,088 | 33.8% | 88,942 | 3.4% | 8,811 | 262,841 | |||