The document discusses various case studies and strategies for political campaigns to reach voters online, including: 1) The Obama 2008 presidential campaign partnered with a gaming company to run ads targeted at gamers in key states, which improved perceptions of Obama and generated significant media coverage. 2) Obama greatly outspent McCain in online advertising by 186 million ads to 24 million ads. 3) A Pew study found that frequent Facebook users are more likely to engage in political activities like attending rallies or trying to influence others' votes. 4) The document discusses using social gaming, social networks, and local online strategies to engage voters.