Advertising matters in politics. As much as we’d all like to believe that we vote based solely on our principles and a careful weighing of candidates’ policy positions, media and marketing messages cast enormous influence on the defining narratives of an election and can ultimately tip an election one way or the other. The 2008 election helped usher in the era of digital marketing in presidential elections, with online advertising, online fundraising and social media all helping to redefine the political landscape. As The Digital Politico: 5 Ways Digital Media is Shaping the 2012 Presidential Election demonstrates, the use of these vehicles has become even more important and looms even larger in influencing this year’s campaign.…