If they could, citizens of the three countries overwhelmingly would elect Obama, the likely Democratic presidential nominee, over his presumptive Republican challenger, Sen. John McCain of Arizona, poll findings released Wednesday indicate. Obama swamped McCain in all three countries -- 60 percent to 15 percent in Britain, 64 percent to 4 percent in France and 62 percent to 10 percent in Germany.

The percentages of respondents saying they didn't know who they'd vote for ranged from 25 percent to 32 percent, the Princeton, N.J., polling agency said.

Obama is to visit the three countries as part of his ongoing trip to the Middle East and Europe.

Results are based on telephone interviews with randomly selected samples of adults that include interviews with 1,011 adults in Germany, 1,006 adults in France, and 1,001 adults in Britain. The overall margin of error is 3 percentage points.