How long will Mariah and pole position belong together?

Dear Mark. Based on its airplay strength, Mariah Carey's "We Belong Together" could have a long run at No. 1. Or, this could be its last week, depending on how many copies of Carrie Underwood's "Inside Your Heaven" are sold. The first three seasons of "American Idol" produced No. 1 songs on the Hot 100 based either entirely or almost entirely on sales, so it's in the realm of possibility that Carrie will rule the chart next week.
Underwood is already No. 1 on the Hot Country Singles Sales chart and No. 5 on the Singles Sales list, based on street date violations.

(Billboard)