Rio DE Janeiro, May 10: Brazil’s Oct presidential elections may feature a second round, as support for incumbent President Dilma Rousseff falters and her contenders gain strength, according to an opinion poll.

The latest Datafolha poll, the results of that were declared Fri, showed that support for Rousseff has fell to 37 p.c from 38 p.c within the previous poll, whereas Aecio Neves, candidate of the most opposition Brazilian political orientation Party, gained four proportion points to 20 p.c.

Support for Brazilian Socialist Party candidate Eduardo Campos gained one purpose to eleven p.c, Xinhua according.

A total of 12 p.c of electors aforesaid they’d vote null and 7 p.c remained undecided, the poll showed.

The poll surveyed 2,844 eligible voters from 174 cities over Brazil Wednesday and Thursday, with a two-point margin of error.