Per constantineIZhot at idolforums, these are the number of myspace members for each idol. Thanks for doing the research!

Ace Young - 16,997 fans.
Taylor Hicks - 6,210 fans.
Chris Daughtry - 2,428 fans.
Katharine McPhee - 1,225 fans.
Lisa Tucker - 849 fans.
Kevin Covais - 590 fans.
Mandisa - 565 fans.
Elliott Yamin - 365 fans.
Bucky Covington - 282 fans.
Kellie Pickler - 111 fans
Paris Bennett - 52 fans

Now if we can get those 17,000 people to powervote for our boy, he'll be set!