Rocker John Mayer has become the latest Hollywood star to publicly endorse Barack Obama for U.S. president, urging critics of the politician's message of "hope" to reconsider.

The 31-year-old singer has made a last minute bid in support of the Democratic candidate less than a week before the history-making election next month.

In a column for online blog The Huffington Post, Mayer writes: "Obama gives me the feeling that I could be alive to witness one of the most brilliant upturns in a country's history. What a concept. That's why hope is a worthwhile commodity. To those who question whether hope is a tangible product worth building a campaign around, I'd say take a look at despair and how powerful that has been in reshaping how people think and live. I believe the definition of the 'hope' that Barack Obama enthuses operates on the unspoken thesis that there has to be a polar opposite to the despair of 9/11. Because if we accept that there's not, the will to live becomes forever altered."

"To adults who will vote for him, Barack Obama represents a return to prosperity. To the youth, he represents an introduction to it."

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(This news article provided by World Entertainment News Network)