5:28 p.m. ET: Does Nicki Minaj rap for Romney?

Rapper Nicki Minaj appears to endorse Romney's presidential bid in a new rap song out this week.

Minaj recorded the verse in a guest appearance on the track "Mercy" on fellow rapper Lil Wayne's mix tape "Dedication 4," which was released online Monday.

"I'm a Republican voting for Mitt Romney/You lazy [expletive] is [expletive] up the economy," Minaj says.

Credit: Getty Images

Read the full story HERE. In an interview with "Nightline," Minaj talks about her music and growing up in New York City. Watch it here:

2:22 p.m. ET: A 69-year-old woman known throughout the drug world as the "Godmother of Cocaine" was gunned down by an assassin on a motorcycle in Colombia Monday, according to international news reports.

Read the full story HERE

Credit: A younger Griselda Blanco shown in this undated photo. (CocaineCowboys.com)

12:50 p.m. ET: CONFIRMED: Apple has just sent out invites to an iPhone event for Wednesday, Sept. 12.

Read the full details from ABC News tech editor Joanna Stern HERE

11:33 a.m. ET: The Democrats will open their convention tonight with a keynote speaker who is young, Hispanic and little known outside of his home city of San Antonio, Texas.

Meet mayor Julian Castro, 37, and tonight could be his spring board to national prominence. Full story HERE

Credit: Charles Dharapak/AP Photo

"Nightline" followed Castro back to his roots in Texas. Tune in tonight to find out what happens.

10:10 a.m. ET: Happy Democratic Convention Day!