Mexico's president is expected to score comfortable wins at Sunday's state elections in the first test of his popularity since taking office, with exit polls showing his party taking both governorships up for grabs. President Andres Manuel Lopez Obrador's party was tipped for victory in the central state of Puebla and the northern state of Baja California, despite a weak economy, rampant violence and troubled relations with his US counterpart Donald Trump.
Lopez Obrador's National Regeneration Movement (MORENA) party was seen winning the Baja California race with between 53.8 per cent and 57.2 per cent of votes, and the Puebla race with between 48.5 per cent and 51.5 per cent, according to two exit polls published by Consulta Mitofsky.
Dozens of lesser seats were being contested in local elections across several states on Sunday, but only those two states were voting for governors.
Opinion polls had given Lopez Obrador's leftist party a commanding lead against a divided opposition in both states, even as clouds have gathered on the horizon because of a potentially calamitous trade row with Trump.
Trump said on Thursday that he would hit all Mexican exports to the United States with an escalating 5 per cent tariff from Jun 10 unless Mexico stops a surge in illegal immigrants from Central America reaching the US border
Mexican Economy Minister Graciela Marquez said on Sunday that she will meet US Commerce Secretary Wilbur Ross in Washington on Monday, as the two governments begin talks on the issue in the US capital this coming week.
Around 80 per cent of Mexico's exports go to the United States, giving Trump plenty of leverage to put pressure on Lopez Obrador, who took office in December.
Since assuming the presidency, Lopez Obrador has repeatedly vowed to root out political corruption, which he says is a legacy of his adversaries' years in power
Disheartened and disorganized, the opposition has yet to recover public trust in spite of concern about Lopez Obrador's economic management and his polarizing instincts.
Indeed, some prominent figures from the main opposition parties have declared their support for MORENA
Lopez Obrador's fight against graft has yet to show tangible results, but this week the government began stepping up a major probe into suspected financial wrongdoing by a former boss of struggling state oil company Pemex.
Still, the 65-year-old's efforts to run a tight budget have caused shortfalls in public services, and helped prompt the first major resignation from his government last month.
His abrupt decisions on economic policy and doubts about the future of Pemex have rattled financial markets, and the economy contracted 0.2 per cent quarter-on-quarter during the first quarter.
Meanwhile, murders are on track to surpass last year's record of nearly 29,000, official data show.