The campaign that drove Barack Obama to victory in the US presidential election has claimed two top awards at the Cannes Lions International Advertising Awards.

The campaign, submitted by Obama for America, has been hailed as a masterful combination of new media, door-to-door and community grass roots campaigning with a clever tactical use of traditional TV advertising.

The campaign won two grands prix in the Titanium and Integrated Lions categories.

To win the Titanium grand prix, a campaign must involve a breakthrough idea that is "provocative, challenges assumptions and points to a new direction".

"Titanium celebrates work that causes the industry to stop in its tracks and reconsider the way forward," according to the rules set out by the Cannes organisers.

The integrated prize is awarded to a campaign using three or more media – such as TV, press and the internet - that is "high standard and state-of-the-art".