Hillary Clinton: Children

Tonight marks the Iowa caucuses, when the people of Iowa become the first US citizens to pick their future president.

While the US presidential campaign is now in full swing until the November election, individual candidates are doing all that they can to ensure they remain in the public domain. After all, out of sight is out of mind.

And Hillary Clinton's latest ad - created by Droga5 - is no different.

Except that her minute-long spot uses archive footage to prove how long Hillary has been campaigning for children's rights.

Edited together in a beautifully-emotive yet fiercely provocative ad, it's clear why Hillary is one of the nation's favourites to win.