| Date | Pollster | Sample size | PNM | UNC | COP | Other | Legislative majority |
| 10 Aug 2020 | 2020 general election | | 22 | 19 | 0 | 0 | 3 |
| 3 Jul 2020 | | Prime Minister Keith Rowley announces that the election will take place on 10 August 2020 and parliament is dissolved. |
| 1 Jun 2020 | | COVID-19 lockdown ends |
| 6 May 2020 | | Ancil Dennis becomes Chief Secretary of Tobago |
| 14 Apr 2020 | | COP, PPM, DPTT and TTDF agree to form a coalition.[citation needed] |
| 30 Mar 2020 | | Trinidad and Tobago commences a nationwide lockdown due to the COVID-19 pandemic |
| 12 Mar 2020 | | The first case of COVID-19 is confirmed in Trinidad and Tobago, pre-campaigning partially suspended on 13 March |
| 26 Jan 2020 | | 2020 Tobago Council of the PNM election; Tracy Davidson-Celestine is elected leader |
| 2 Dec 2019 | | PNM wins more districts, ties in number of corporations won to the UNC in the 2019 Trinidadian local elections |
| 1 Oct 2019 | | The 2019 budget is delivered |
| Aug 2019 | NACTA/Newday | – | 23 | 18 | 0 | 0 | 5 |
| Apr 2019 | NACTA/Newsday | – | 26 | 15 | 0 | 0 | 11 |
| Mar 2019 | NACTA/Newsday | 540 | 25 | 16 | 0 | 0 | 9 |
| 1 Oct 2018 | | The 2018 budget is delivered |
| Sep 2018 | NACTA/Newsday | – | 23 | 18 | 0 | 0 | 5 |
| 16 July 2018 | | Barataria and Belmont East Local Government By-Elections |
| 19 Jan 2018 | | 2018 Trinidad and Tobago presidential election; Paula-Mae Weekes is elected president |
| 19 Nov 2017 | | Carolyn Seepersad-Bachan is elected leader of the COP |
| 23 Jan 2017 | | The Tobago Council of the PNM wins the 2017 Tobago House of Assembly election; Kelvin Charles becomes Chief Secretary of Tobago |
| 7 Oct 2017 | | The 2017 budget is delivered |
| 28 Nov 2016 | | PNM wins the 2016 Trinidadian local elections |
| 30 Sep 2016 | | The 2016 budget is delivered |
| 10 Jul 2016 | | Anirudh Mahabir is elected leader of the COP |
| 3 Jul 2016 | | Kelvin Charles is elected leader of the Tobago Council of the PNM |
| 15 Dec 2015 | | The People's Partnership splits up |
| 7 Dec 2015 | | PNM wins the Auzonville/Tunapuna and Malabar South Local Government By-Elections |
| 28 Sep 2015 | | The 2015 budget is delivered |
| 9 Sep 2015 | | Keith Rowley is sworn in as Prime Minister of Trinidad and Tobago |
| 7 Sep 2015 | 2015 general election | – | 23 | 17 | 1 | 0 | 5 |