CONSTITUENCY RESULT : Gainsborough
| Candidates by vote share | |||||||
| Candidate name | Party | Gender | Number of votes | Share (%) | Change vs. 2017 for party (percentage points) | ||
| Edward Leigh | Conservative | Male | 33,893 | 66.4% | +4.6 | ||
| Perry Smith | Labour | Male | 10,926 | 21.4% | -7.3 | ||
| Lesley Rollings | Liberal Democrat | Female | 5,157 | 10.1% | +3.0 | ||
| Mary Cavill | Independent | Female | 1,070 | 2.1% | 0.0 |
| Election statistics | ||
| Majority | ||
| Votes | 22,967 | |
| Percent | 45.0% | |
| Rank (1 = highest %) | 69 | |
| Turnout | ||
| Constituency | 66.9% | |
| Region | 67.2% | |
| UK | 67.3% | |
| Constituency in 2017 | 67.8% | |
| Size of electorate | 76,343 | |
| Valid votes cast | 51,046 |