2017 was an unusual year for politics in Chile. After a period of institutional stability, the government had to face forest fires, police corruption, and reports of abuses within the National Service for Minors (SENAME). In addition, the years saw presidential, parliamentary, and regional elections. This was also the first time that the new electoral system, which replaced the binominal formula with a more proportional system using a great district magnitude, was used for national elections. We argue that this change in the electoral rule had three effects on political actors: 1) uncertainty about the new rules changed political ambitions; 2) it led to new campaign strategies; 3) it gave new actors who had traditionally been excluded from electoral competition new hope.