@urlyman [Yes] Twice in ~20 years.
✘ 2000s Local Election: Low-stakes and "try for heart over tactics", I thought, didn't win the Green but got Lib Dem, my usual pick and also the tactical choice in the two-way split Lib Dem−Conservative (but usually LD) ward.
✔ 2019 European Parliament Election: I won my Green MEP, reckoning the D'Hondt method to be up to the task.
All other elections under FPTP, I've gone tactical. Won 15/22 at Local (3 "losses" may count as half-wins), and 3/6 at GE.