UPDATE 1-Brazil's largest party closer to backing impeachment after protests
(Adds ministers back Rousseff; heads of two agencies quit)
By Anthony Boadle
BRASILIA, March 14 (Reuters) - Record protests against President Dilma Rousseff have all but guaranteed her impeachment by pushing hesitant lawmakers from Brazil's biggest party to favor her ouster, party sources said on Monday.
The Brazilian Democratic Movement Party (PMDB), the biggest partner in Rousseff's governing coalition, is poised to vote against her in ongoing proceedings in Congress to impeach the president. Rousseff is beset by a corruption scandal and an economy suffering its worst recession in decades.
Massive turnout for nationwide protests on Sunday tipped the balance within the PMDB, three senior party sources said. Over 1 million Brazilians took to the streets to call for Rousseff's removal.
"Impeachment is inevitable," said one of the three senior PMDB officials, who is close to the government but spoke on the condition of anonymity.
Though the party is notoriously fickle, with no fixed ideology and a longstanding ability to swing with the prevailing political winds, the PMDB has been increasingly reluctant to continue supporting Rousseff.
In a vote at a party convention on Saturday, it resolved to make a final decision on whether to continue supporting Rousseff within 30 days.
Even so, many variables could affect Rousseff's political straits. Continuación...