Carlos Ramos Linares, a 27-year-old community manager for Tribuna Comunicacion, a media outlet based in Puebla, about two hours outside of Mexico City, told CNBC that a Trump win could have repercussions not only in Mexico, but across all of Latin American.
"If he wins, I think that, because of all his threats — like making us pay for the wall — there would be a political conflict that would take place not just in Mexico, but all over Latin America. Trump's racism isn't just against Mexicans, but rather against all of Latin America," he told CNBC by telephone.
Mexicans' views on Clinton are more mixed.
"I think Hillary Clinton is the best option for Mexico," Hernandez said. "Having a woman as a U.S. president would empower women across Latin America, in terms of politics."
However, a Clinton presidency could stir up bad memories, especially for those living near the border.
"It was the Clintons who put up the fence that we currently have," said Manuel Ocano, a freelance journalist living in Chula Vista, California, just seven miles north of the border. In 1994, President Bill Clinton's administration began the construction of the fence that divides the U.S. and Mexico.
Ocano added, however, that "Donald Trump doesn't know anything about the border. People here live with one foot on each side of the fence."
In 2007, Tecate firefighters crossed the border to put out the wildfires in San Diego County and saved an Anglo woman, Ocano said. She thanked the firefighters by making them a home-cooked meal. "She didn't speak a word of Spanish … but they didn't need words to communicate."
He noted that there are people who go across the border — from both directions — for work, shopping and other matters.
But regardless of who wins, the ongoing election could have serious consequences for relations between the United States and Mexico.
"We have a high-level U.S.-Mexican relationship going back a few years now," O'Neil from the Council on Foreign Relations said. Mexico is one of the United States' biggest economic partners, with bilateral trade totaling at least $500 billion each of the past three years, according to U.S. Census Bureau data.
"In the last 10 to 15 years, the U.S.-Mexico relationship has grown exponentially," Peter Schechter, director of the Adrienne Arsht Latin America Center at the Atlantic Council, told CNBC by telephone.
From 2000 to 2015, Mexican-imported goods increased by nearly 120 percent and, from 1990 to 2015, they rose about 882 percent, Census data showed. Exports from the U.S. to Mexico, meanwhile, rose about 112 percent from 2000 to 2015 and more than 730 percent from 1990 to 2015.