Brazil’s presidential runoff election presents a significant challenge for the BRICS economic bloc. A victory for Jair Bolsonaro could reverse current policies and strengthen ties with former US President Donald Trump. This shift could substantially weaken Brazil’s commitment to BRICS, potentially creating the biggest political test the group has faced to date. The outcome of the election in Brazil is being closely watched internationally due to its implications for global geopolitics. A return to power for the Bolsonaro family threatens to destabilize the current trajectory of the BRICS nations. Experts predict a Bolsonaro win would signify a major realignment of Brazil's foreign policy, impacting its relationships with countries like Russia and China, key members of BRICS.