In the framework of United States elections, candidates must strategically position themselves to appeal to voters and secure electoral support. A critical component of this strategy involves the financing of their campaigns. Campaign finance refers to the money that candidates raise and spend in their pursuit of political office. Regulations surrounding campaign finance are primarily governed by federal laws, including the Federal Election Campaign Act (FECA) and rulings from the Supreme Court.
Which of the following statements best describes a significant impact of the Supreme Court decision in Citizens United v. FEC (2010) on campaign finance?