Supporters of presidential front-runner Andrés Manuel López Obrador (not pictured) at a political rally n Oaxaca, on June 16. (Reuters/Jorge Luis Plata)
Supporters of presidential front-runner Andrés Manuel López Obrador (not pictured) at a political rally n Oaxaca, on June 16. (Reuters/Jorge Luis Plata)

CPJ Safety Advisory: Covering elections in Mexico