Google: possible Veep.

Republican presidential candidate John McCain joked on Monday that Google, the popular Internet search engine, had made investigating his list of potential candidates a little bit easier.

"You know, basically it's a Google," he said to laughter at a fund-raising luncheon when asked how the selection process was going. "What you can find out now on the Internet -- it's remarkable."

Vice presidential candidates go through rigorous screening to determine whether they would help a White House aspirant in a general election -- and to make sure there is nothing in their background that could be damaging down the road.

McCain, 71, has faced high scrutiny in his search because of his age.

The Arizona senator, who wrapped up his place on the top of the Republican ticket earlier this year, said he still had some time to complete the search for a number two.