U.S. Sen. Ted Cruz (R-Texas) and challenger U.S. Rep. Beto O'Rourke (D-El Paso) squared off for an hour in The Texas Debate at KENS 5 in San Antonio on Tuesday night.

The candidates clashed over climate change, Supreme Court judges, border control and more. We provided updates here throughout the debate – here's a rundown of how it unfolded, by each topic, with video clips of several tense moments: