An election to the 58th Parliament of the United Kingdom for the constituency area of St Ives, held as part of the general election on 12 December 2019.
Conservative hold by Derek Thomas with a majority of 4,280 - 8.3% - on a turnout of 74.7%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| THOMAS, Derek | Con | 25,365 | 49.3% | 6.2% |
| GEORGE, Andrew | LD | 21,085 | 41.0% | -1.6% |
| BATES, Alana | Lab | 3,553 | 6.9% | -7.3% |
| FLINDALL, Ian | Green | 964 | 1.9% | - |
| SMITH, Robert | Lib | 314 | 0.6% | - |
| HARRIS, John | CP | 132 | 0.3% | - |
Under section 13(b) of the Representation of the People Act 1985, a candidate gaining 5% or less of the vote share will forfeit their deposit.
An electorate of 68,795, having a valid vote count of 51,413 and an invalid vote count of 111.
Result declared at 14:52 on 13 December 2019.