Explainer: Argentina midterm vote is a power struggle for Congress

FILE PHOTO: Argentina's President Alberto Fernandez looks on during the session of the 138th legislative term at the National Congress in Buenos Aires, Argentina March 1, 2020. REUTERS/Agustin Marcarian/File Photo

BUENOS AIRES (Reuters) - Argentines will head to the polls on Sunday with the balance of power in Congress up for grabs and the ruling Peronist coalition fighting to avoid a bruising defeat that could erase its Senate majority and leading position in the lower house.

WHY IS THE VOTE IMPORTANT?