Ballot burning in Argentine province adds to Scioli headaches

Daniel Scioli, Buenos Aires' province governor and presidential candidate, waves an Argentine national flag in Buenos Aires, early August 10, 2015. REUTERS/Martin Acosta

BUENOS AIRES (Reuters) - Argentine presidential candidate Daniel Scioli emerged as front-runner in primary elections this month but has struggled to build momentum, hampered by floods in his home province and the burning of ballots in a local election won by a candidate from his party.

Club-wielding mounted police broke up protests Monday night in the tiny northern province of Tucuman where witnesses say ballots from 42 voting stations were burned after Sunday's governor's election.