(In Oct 1 item, corrects first paragraph to say election is this month.)
SAO PAULO, Oct 1 (Reuters) - Brazil’s far-right presidential candidate Jair Bolsonaro has a 10-point lead over leftist Workers Party candidate Fernando Haddad, and would tie in a second-round runoff against him this month, an opinion poll showed on Monday.
Bolsonaro, who is recovering from a near-fatal stabbing, has increased his lead ahead of the election this Sunday with 31 percent of voter support in a simulated first-round ballot, the survey by polling firm Ibope said, while Haddad has 21 percent.
In the likely case of a runoff vote, required if no candidate takes a majority, Bolsonaro and Haddad both had 42 percent, with the remaining voters undecided or saying they would annul their ballots. (Reporting by Brad Brooks; Editing by Sandra Maler)