Texans were shocked to see massive lines forming at a Houston-based consulate for a presidential election in another country miles away from the Lone Star State. 

Video footage revealed dozens of Colombian nationals lining up outside the Consulate General of Colombia to cast their ballot in the country's controversial presidential election. 

The election will be held on Sunday, but Colombians registered to vote living abroad can cast their ballots at polling sites across 67 countries, including the US. 

Voting opened on Monday, with prospective voters flocking to the Houston consulate, resulting in long wait times and operational issues, leaving some forced to walk away without casting their ballot, Reuters reported. 

Some Texans expressed frustration with the process, with one sharing a video of a massive line on X and writing, 'In Houston, we have Colombians packed outside THEIR consulate, voting for THEIR president on American soil and act like this is normal.

'Open borders were such a mess, we’re now hosting their elections. When the hell does it stop? #TexasChanged.' 

However, others pointed out that Americans can also vote in US elections abroad, with one arguing, 'That’s what consulates are for this is not unique to Colombia, educate yourself.' 

'You know Americans can vote at U.S. embassies and consulates when abroad too, right?' another added. 

Many on social media reported waiting in line for hours to vote, with some being turned away. 

Diego Santos, a Colombian journalist, shared a photo of a line wrapped around a Miami block and wrote on X, 'Colombians in Miami are reporting that the Consulate is slowing down the voting process so that people get tired and don't vote.'

He added that those waiting in the line have reported standing still for several hours under the hot Florida sun.

One commenter shared that they waited at a polling place in Newark, New Jersey, for four hours and still could not vote. 

Another voter in Boston shared a photo and video of standstill lines flooding the streets at 3pm. 

There are 11 Colombian consulates in the US, located in Washington DC, Atlanta, Boston, Chicago, Houston, Los Angeles, Miami, Newark, New York City, Orlando and San Francisco. They serve as official polling places for Colombians abroad during national elections. 

Three candidates have emerged as frontrunners as President Gustavo Petro approaches the end of his term. 

Petro was a former member of a social justice guerrilla group and embraced negotiations with rebels as president. 

Iván Cepeda is running with Petro's Historical Pact party. He has promised to strengthen Petro's economic reforms, including increasing the nation's minimum wage and imposing higher taxes on corporations. 

He has also expressed a friendliness to rewriting the nation's constitution, which his opponents, Paloma Valencia and Abelardo de la Espriella, have vehemently opposed.

Espriella is a lawyer running as an independent. He has represented business owners accused of money laundering and a sex worker who accused US Secret Service agents of illegal conduct, the Associated Press reported. 

Valencia represents the nation's Democratic Center party and has run on a more conservative platform to reduce taxes on businesses and return investments to oil and gas. 

Colombia has a significant number of voters abroad. Of the country's 41.2 million registered voters, 1.2 million live abroad. 

A majority of those voters resided in the US, Spain and Venezeula, according to the National Registrar's Office.