Illuminating 2020 Report: The 2020 General Election Campaign Advertising on Facebook – Illuminating
Obama outspends Romney on online ads - CNNPolitics
Obama outspends Romney on online ads - CNNPolitics
A Promised Land: Obama, Barack
U.S. elections 2012 - Obama campaign spending March 2012 | Statista
How Money Affects Elections | FiveThirtyEight
Barack Obama: Campaigns and Elections | Miller Center
Barack Obama 2008 presidential campaign - Wikipedia
Nearing Record, Obama's Ad Effort Swamps McCain - The New York Times
Getting and spending: US election money wars – Channel 4 News
How the Trump Campaign Is Drawing Obama Out of Retirement - The New York Times
Obama Takes in a Record $150 Million, But McCain Narrows Gap in Some Polls - WSJ
The Science Behind Those Obama Campaign E-Mails - Bloomberg
Obama's Fiscal Legacy: An Overview of Spending, Taxes, and Deficits
U.S. elections 2012 - Obama campaign spending 2011, by category | Statista
How Much It Costs to Run for President? A 40-Year Timeline
PolitiFact | Barack Obama's top 25 campaign promises: How'd he do?
US elections: How Obama became a campaign fundraising phenomenon | Barack Obama | The Guardian
How the Presidential Candidates Use the Web and Social Media | Pew Research Center
President Barack Obama's First Two Years: Policy Accomplishments, Political Difficulties
INFOGRAPHIC: Obama, Romney Final Ad Spend
R.I.P. positive ads in 2012 election - POLITICO
How the Presidential Candidates Use the Web and Social Media | Pew Research Center
Obama, Biden to campaign for Fetterman, Shapiro in Pennsylvania
