There are three types of national elections in Chile which are:
Chamber of Deputies: occurs every 4 years. The first election was held in 1811 and the last one was in 2021.
Senate: occurs every 4 years. The first election was held in 1811 and the last one was in 2021.
Presidential: occurs every 4 years. The first election was held in 1826 and the last one was in 2021.