Bob Barr’s Libertarian campaign for president is already having an impact.

Bob Barr’s Libertarian presidential campaign is poised to play a serious role in this year’s elections, with early polls showing him taking away enough votes from Sen. John McCain to give Democrats a chance to win states that should be safely Republican.

Polls in Georgia and North Carolina over the last two weeks show Mr. Barr winning 8 percent and 6 percent respectively of the presidential vote, and in both cases helping keep likely Democratic presidential nominee Sen. Barack Obama within striking distance of Mr. McCain in those states — which, taken together, account for more electoral votes than Florida, Pennsylvania or Ohio.