Please note that while the American Citizen Services Unit can mail your voter registration or completed ballot to the U.S., U.S. Embassy Bogota is not a polling station and it will not be possible to vote at the Embassy on November 8.
In order to receive an absentee ballot, overseas voters must 1) register with a specific state (typically your current U.S. legal residence or your last residence in the U.S.) and 2) request an absentee ballot. Deadlines for each of these steps are set by each state, and registration deadlines in many states have already passed. Please consult https://www.fvap.gov/ and your state authority for specific information.
Please note that if you requested an absentee ballot and did not receive one, you may be eligible to use the Federal Write-In Absentee Ballot (see https://www.fvap.gov/eo/overview/materials/forms), and U.S. Embassy Bogota can mail it back for you.
U.S. Embassy Bogota will continue to receive completed voter registration forms (for states where the registration deadline has not passed) and ballots through November 8. Voting materials sent after November 1 are unlikely to be delivered by Election Day, although most states will still count ballots received within a specific number of days after the election. There is no requirement to send your voting materials back through U.S. Embassy Bogota, and you can also use commercial or regular mail services if more convenient.