|
! Entrevistados
! class=small | Margem de erro
! Michael<br>Castle (R)
! Chris<br>Coons (D)
! Christine<br>O’Donnell (R)
! Não sabe/<br>Ninguém
|-
| rowspan=1 |
| [http://www.dailykos.com/statepoll/2009/10/14/DE/395 Research 2000]
[http://www.rasmussenreports.com/public_content/politics/elections/election_2010/election_2010_senate_elections/delaware/toplines/toplines_delaware_senate_july_14_2010 Rasmussen Reports]
| 12-14 de outubro de 2009
| rowspan=1 | 14 de julho de 2010
| 600
| rowspan=1 | 500
| ± 4.0%
| rowspan=1 | ± 4.5%
|bgcolor=#FFE8E8| '''51%'''
| 39%
| ––
| ––
| 10%
|-
| [http://www.rasmussenreports.com/public_content/politics/elections/election_2010/election_2010_senate_elections/delaware/toplines/toplines_delaware_senate_january_25_2010 Rasmussen Reports]
| 25 de janeiro de 2010
| 500
| ± 4.5%
|bgcolor=#FFE8E8| '''56%'''
| 27%
| ––
| 5%
| 13%
|-
| [http://www.rasmussenreports.com/public_content/politics/elections/election_2010/election_2010_senate_elections/delaware/toplines/toplines_delaware_senate_february_22_2010 Rasmussen Reports]
| 22 de fevereiro de 2010
| 500
| ± 4.5%
|bgcolor=#FFE8E8| '''53%'''
| 32%
| ––
| 8%
| 8%
|-
| rowspan=2| [http://www.dailykos.com/statepoll/2010/2/24/DE/455 Research 2000]
| rowspan=2| 22-24 de fevereiro de 2010
| rowspan=2| 600
| rowspan=2| ± 4.0%
|bgcolor=#FFE8E8| '''53%'''
| 35%
| ––
| ––
| 12%
|-
| ––
|bgcolor=#DDEEFF| '''47%'''
| 31%
| ––
| 22%
|-
| [http://www.rasmussenreports.com/public_content/politics/elections/election_2010/election_2010_senate_elections/delaware/toplines/toplines_delaware_senate_april_29_2010 Rasmussen Reports]
| 29 de abril de 2010
| 500
| ± 4.5%
|bgcolor=#FFE8E8| '''55%'''
| 32%
| ––
| 7%
| 7%
|-
| rowspan=2 | [http://www.rasmussenreports.com/public_content/politics/elections/election_2010/election_2010_senate_elections/delaware/toplines/toplines_delaware_senate_july_14_2010 Rasmussen Reports]
| rowspan=2 | 14 de julho de 2010
| rowspan=2 | 500
| rowspan=2 | ± 4.5%
|bgcolor=#FFE8E8| '''47%'''
| 36%
| ––
| 6%
| 11%
|-
| ––
| 39%
|bgcolor=#FFE8E8| '''41%'''
| 12%
|-
| rowspan=1 | [http://www.dailykos.com/storyonly/2010/8/10/891639/-DE-Sen,-DE-AL:-Castle-(R)-under-50,-Coons-(D)-still-unknown Public Policy Polling]
| rowspan=2 | [http://www.rasmussenreports.com/public_content/politics/elections/election_2010/election_2010_senate_elections/delaware/election_2010_delaware_senate Rasmussen Reports]
| rowspan=21 | 57-8 de agosto de 2010
| rowspan=21 | 500600
| rowspan=21 | ± 4.50%
|bgcolor=#FFE8E8| '''49%'''
| 37%
| ––
| 5%
| 9%
|-
| ––
|bgcolor=#DDEEFF| '''46%'''
| 36%
| 10%
| 8%
|-
| rowspan=2 | [http://www.dailykos.com/storyonly/2010/8/10/891639/-DE-Sen,-DE-AL:-Castle-(R)-under-50,-Coons-(D)-still-unknown Public Policy Polling]
| rowspan=2 | 7-8 de agosto de 2010
| rowspan=2 | 600
| rowspan=2 | ± 4.0%
|bgcolor=#FFE8E8| '''48%'''
| 35%
| ––
| ––
| 17%
|-
| ––
|bgcolor=#DDEEFF| '''44%'''
| 37%
| ––--
| 19%
|}
|}
===Fundos===
{| class="wikitable sortable"
| 