The Republican National Committee ran online display ads in an effort to detract from Democratic Presidential candidate Barack Obama and help Republican ... read more
MoveOn.org and NOW PACs threw their hats into the online political ad ring in May, while the Democratic National Committee asked for party support.
Despite the disparity, both Democratic presidential hopefuls spent the bulk of their online ad budgets on Google.
New data suggest candidates are missing out on online ad opportunities.
Google's top political ad man contends savvy search advertising contributed to the success of both Barack Obama's and John McCain's primary season wins.
UPDATE: The biggest recipient of the Democratic Presidential hopeful's online ad dollars from January through April was Google.
Some local and statewide candidates deploy online ads to reach voters in their own states, and to garner support and donations from across the country.
Obama barnstormed North Carolinians with Web ads in April, while McCain and Clinton ran relatively few display ads last month.
While Clinton, McCain and Obama all push for donations in e-mails, the Obama's campaign also uses e-mail to get diehards to trek to Oregon and knock on doors.
Recent online ad efforts by liberal group MoveOn.org and conservative nonprofit Freedom's Watch imply more advocacy Web spending this election.