Justin Timberlake

Justin Timberlake and Macklemore & Ryan Lewis lead the nominees with six apiece. (John Marshall / Invision / Associated Press)

Taylor Swift — “I Knew You Were Trouble”

Miley Cyrus — “We Can’t Stop”

P!nk feat. Nate Ruess — “Just Give Me A Reason”

Demi Lovato — “Heart Attack”

Best pop video

Bruno Mars — “Locked Out of Heaven”

Justin Timberlake — “Mirrors”

fun. — “Carry On”

Miley Cyrus — “We Can’t Stop”

Selena Gomez — “Come and Get It”

Artist to watch

Twenty One Pilots — “Holding On To You”

Zedd Feat. Foxes — “Clarity”

Austin Mahone — “What About Love”

The Weeknd — “Wicked Games”

Iggy Azalea — “Work”

Best collaboration

Justin Timberlake feat. Jay-Z —“Suit & Tie”

Pitbull feat. Christina Aguilera — “Feel This Moment”

Calvin Harris feat. Ellie Goulding — “I Need Your Love”