ABC's Good Morning America is said to have beaten its morning talkshow competitor, NBC's Today, in week-long ratings for the first time since 1995.
GMA averaged 5.147 million viewers for the week of April 9, according to Nielsen preliminary ratings, while Today averages 5.134 million viewers - a difference of 13,000.
GMA senior executive producer Tom Cibrowsk said: "This is an exciting day but we will save any celebrating for when the final numbers come in on Thursday.
"Like every week, we want to thank our loyal viewers, our stations, our amazing team of Robin Roberts, George Stephanopoulos, Sam Champion, Josh Elliott, Lara Spencer, and our dedicated staff and crew for getting us to this amazing point."
If GMA does come out on top on Thursday, April 19, it will mark the end of Today's 16-year winning streak in the morning talkshow landscape.
Earlier this month, both shows had notable guest hosts. Sarah Palin appeared on Today and Katie Couric was on GMA for one week.
Kathy Griffin recently claimed that she has been banned from Today by the show's newsreader Natalie Morales.
Watch Robin Roberts interview Chris Brown on Good Morning America below: