Poll hints Clinton backers wary

 (CNN) - One week after Hillary Clinton made a public show of unity with Barack Obama, a new survey suggests supporters of the New York senator are increasingly less likely to follow her lead.

A growing number of Clinton supporters say they may stay home in November instead of casting their ballot for Obama, an indication the party has yet to coalesce around the Illinois senator four weeks after the most prolonged and at times divisive primary race in modern American history came to a close.

According to a new survey from CNN and the Opinion Research Corp., the number of Clinton supporters who say they plan to vote for Obama has dropped from 60 percent to 54 percent, while the number who of them say they would stay home has risen from 22 percent to 32 percent.

The question had a sampling error of 7.5 percent, so the numbers cannot be pinned down.