Discover the profound impact of corporate interests and political advertising on modern elections in the wake of the Citizens United decision. This pivotal ruling has transformed campaign finance, allowing unlimited spending by corporations and unions, which has fueled the rise of Political Action Committees (PACs) and "dark money" sources. Explore the ongoing debates about the influence of money in politics, with arguments for and against repealing Citizens United, and compare international approaches to campaign finance. Delve into the challenges posed by misinformation in political advertising and the need for regulatory reforms, transparency, and ethical practices to safeguard electoral integrity and democracy.