By Bruce Stokes, Director of Pew Global Economic Attitudes, Pew Research Center

Special to CNN

At the Republican National Convention scheduled to take place this week and the Democratic National Convention beginning September 3, Americans will notionally be choosing their candidates for president of the United States. Effectively they will be deciding who will be the leader of the world for the next four years.

The world’s citizens get no say in this choice. Nevertheless, people outside the United States have definite opinions about Obama and some of the key issues in the campaign: about the state of the economy and what to do about it, climate change and how they think Washington should treat them.

Neither the GOP nor the Democratic nominee is likely to shape his electoral message to the American people to please foreigners. In fact, if he did, it would probably hurt his chances of winning.

But either challenger Mitt Romney or incumbent President Barack Obama is going to be the next U.S. president. And experience shows that the success or failure of his foreign policy may depend, in part, on how it is perceived abroad. So what people around the world think going into the final two months of the U.S. presidential campaign does matter, if not on November 6, then for the next four years.

Europeans have had a four-year love affair with Barack Obama: 87 percent of Germans, 86 percent of French and 80 percent of the British have confidence in Obama, according to a 2012 poll by the Pew Research Center’s Global Attitudes project. In each case this is higher than public confidence in their own national leader. And 92 percent of the French, 89 percent of the Germans and 73 percent of the British want Obama reelected.

Read the full commentary at CNN’s Global Public Square blog