Flávio Bolsonaro’s lead puts Motta and Alcolumbre’s congressional posts at risk

Brazil’s Senate and Chamber of Deputies will choose their leaders from February.

Flávio Bolsonaro’s party wants to take charge of at least one chamber, while allies of the current leaders are asking him to back their re-election.

Disputes with the Bolsonaro camp have weakened support for both leaders.

The contest could shape how power is shared in Congress and the government.