The 2012 election has been a treasure trove for data miners, statisticians, and analysts — they collected massive amounts of information and developed novel analyses that will be useful for years to come. One of Obama's reelection campaign teams dedicated themselves to optimizing donation emails, and found that the messages that drew the most money were also the most casual. Subject lines like "Hey" and "I will be outspent" were the most successful, netting millions of dollars according to Bloomberg Businessweek. For more on the surprising discoveries Obama's campaign made, read the source link below.