Results for the UK general election on 7 May 2015 England - Elections contested by Cannabis Is Safer Than Alcohol
| Constituency | Candidate | Electorate | Turnout | Votes | Vote share | Vote change | Position |
| Stoke-on-Trent Central | MAJID, Ali | 60,634 | 51.3% | 244 | 0.8% | - | 7th |
| Hackney South and Shoreditch | BIRCH, Paul | 84,971 | 56.0% | 297 | 0.6% | - | 7th |
| Kensington | AUGUSTE, Tony | 61,133 | 57.0% | 211 | 0.6% | - | 6th |
| Vauxhall | JENSEN, Louis | 82,231 | 58.3% | 164 | 0.3% | - | 8th |
| Leeds West | WEST, Matthew | 64,950 | 59.2% | 217 | 0.6% | - | 6th |
| Sheffield South East | BATTERSBY, Jen | 70,422 | 59.2% | 207 | 0.5% | - | 6th |
| Cities of London and Westminster | DESFORGES, Edouard-Henri | 60,992 | 59.3% | 160 | 0.4% | - | 6th |
| Wakefield | BARR, Elliot | 70,521 | 60.9% | 283 | 0.7% | - | 7th |
| Camberwell and Peckham | ROBERTSON, Alex | 82,746 | 62.3% | 197 | 0.4% | - | 9th |
| Streatham | BEAST, Artificial | 79,137 | 63.1% | 192 | 0.4% | - | 6th |
| Holborn and St Pancras | O'DONNELL, Shane | 86,764 | 63.3% | 252 | 0.5% | - | 6th |
| Great Yarmouth | TOWNLEY, Sam | 69,793 | 63.7% | 167 | 0.4% | - | 6th |
| Thurrock | BARNES, Jamie | 77,559 | 63.9% | 244 | 0.5% | - | 5th |
| Bethnal Green and Bow | DEWEY, Jonathan | 82,727 | 64.0% | 303 | 0.6% | - | 8th |
| Islington South and Finsbury | KIRTON, Jay | 68,127 | 65.0% | 309 | 0.7% | - | 6th |
| Eddisbury | ANTAR, George | 68,569 | 69.1% | 301 | 0.6% | - | 6th |
| Woking | WADE, Declan | 74,269 | 70.0% | 229 | 0.4% | - | 6th |
| Guildford | SMYTH, Gerri | 75,733 | 71.3% | 196 | 0.4% | - | 8th |
| Esher and Walton | HEENAN, Matt | 79,894 | 71.3% | 396 | 0.7% | - | 6th |
Turnout as calculated by the House of Commons Library, is the total number of votes cast and not spoiled, divided by the size of the electorate.
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.