When President Obama marked the one-year anniversary of Osama bin Laden’s death earlier this week by unexpectedly addressing the nation from Afghanistan, several commentators cited it as an example of the ”advantage of incumbency”: the president’s visibility and ability to dominate the news are greater, just by virtue of being president, than those of challenger Mitt Romney, and he should be expected to benefit from the groundwork his campaign laid during the 2008 campaign, particularly its vast network of supporters, donors, and social media connections.