A high-profile Venezuelan opposition leader is calling for a recall referendum against President Nicolas Maduro.

Two-time presidential candidate Henrique Capriles called for a voter referendum to oust the socialist leader Wednesday. Capriles leads the more moderate wing of Venezuela's opposition, and previously stopped short of calling for Maduro's ouster.

Maduro has been on a collision course with opposition leaders since critics of Venezuela's socialist government took control of Congress in January for the first time in more than a decade. Last week, the Supreme Court overturned the one decision Congress has made since being sworn in.

A governor who narrowly lost to Maduro in the last presidential election in 2013, Capriles leads the opposition party that won a plurality of seats in the new Congress.