Why did Jacques-Louis David vote for the execution of Louis XVI?

Jacques-Louis David’s vote for the execution of Louis XVI was rooted in his deep political commitment as a member of the extremist Jacobin group led by Maximilien Robespierre.1

During the French Revolution, David became an energetic, politically committed artist who believed that an artistic genius should be guided by the "torch of reason". His alignment with the radical faction of the National Convention reflected his broader ideological shift toward republicanism, which he had previously explored in his art through themes of self-sacrifice and the rejection of aristocratic corruption.1

By the time he was elected to the National Convention in 1792, David was fully integrated into the revolutionary movement. The trial of the king served as a pivotal moment for the Convention to desacralize the monarchy and solidify the Republic. For David and his fellow deputies, the vote was a definitive act that marked them as regicides, ensuring there could be no turning back from the revolutionary path they had chosen.12