Brazil's left-wing President Luiz Inácio Lula da Silva has been elected for a fourth term after narrowly defeating right-wing candidate Flávio Bolsonaro in a closely contested vote.

The election result marks a significant victory for Lula, a prominent figure in Brazilian politics, and signals a shift in the country's political landscape.

BBC's correspondent Ione Wells reported from Brasília, explaining the intricacies of the election results. The campaign was characterized by intense rivalry and a stark ideological divide between the two candidates.

Flávio Bolsonaro, son of former President Jair Bolsonaro, represented the right-wing opposition, while President Lula da Silva championed a left-wing platform. The narrow margin of victory underscores the deep political polarization within Brazil.

This election outcome is seen as a crucial moment for Brazil, with implications for the nation's economic policies, environmental strategies, and its role on the global stage. Lula's previous terms were marked by significant social programs and economic growth, and his return to power is anticipated to bring about renewed focus on these areas.

Supporters of President Lula expressed optimism about the future, highlighting his experience and commitment to social justice. Conversely, Bolsonaro's supporters voiced concerns about the direction of the country under a left-wing government.

The campaign leading up to the vote saw extensive debate on key issues such as poverty reduction, environmental protection, and democratic institutions. The final results reflect a divided nation, with both sides mobilizing their bases to secure victory.

As President Lula da Silva prepares to govern, attention will be on his administration's ability to unite the country and address the pressing challenges facing Brazil.