[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/12/15/art.mobama-1215.gi.jpg caption="Michelle Obama's stock is on the rise as more Americans approve of how she is handling her role as first lady."]
Washington (CNN) - Michelle Obama's stock is on the rise as more Americans approve of how she is handling her role as first lady now than they did 10 months ago, according to a new Marist College Poll.
The survey shows that 57 percent of registered voters approve of Obama's performance as first lady, up 7 points from a Marist poll conducted in March. Twenty-four percent said it has been fair, while 10 percent thought she is doing a poor job.
But Obama is not viewed as a transformative first lady. Only 37 percent said she has changed the role for the better, while 46 responded she has done nothing to change it. Another 10 percent said Obama has changed it for the worse, while 7 percent were unsure.
The poll of 858 registered voters was conducted on December 2, 3 and 7. It has a margin of error of plus or minus 3.5 percent.
Follow Mark Preston on Twitter: @prestoncnn