Barack Obama called John McCain's plan to allow offshore drilling for oil a "scheme" last week, but the presumed Democratic nominee now says that offshore drilling should be considered as part of comprehensive energy policy.
Public support for offshore drilling is seen as the impetus behind Obama's change of mind.
In addition to drilling, Obama also is in favor of tapping the nation's strategic petroleum reserve and taxing oil company profits that are at historic highs.
John McCain became a supporter of offshore drilling last year after previously opposing it. Both campaigns are attempting to use the issue as a referendum on how the candidates would lead, with Obama's camp saying that he is open to compromise while McCain boosters claiming that the Republican candidate would address issues decisively.