Democratic presidential candidate Hillary Clinton greets people after speaking at a rally at Grand View University in Des Moines, Iowa on Jan. 29.
Republican presidential candidate, Sen. Marco Rubio, R-Fla. speaks during a town hall meeting, in Burlington, Iowa.
Heidi Cruz whispers to her husband Ted Cruz, as they are introduced during a campaign event,in Ringsted, Iowa.
Jonathan Van Norman, a field staffer for Republican presidential candidate, Sen. Rand Paul, R-Ky., loads campaign material into a van after a town hall at the National Sprint Car Hall of Fame and Museum in Knoxville, Iowa.
Republican presidential candidate, New Jersey Gov. Chris Christie speaks during a campaign event at the Maytag Student Center, in Pella, Iowa.
Jim Beasley watches as Democratic presidential candidate Bernie Sanders speaks during a campaign event in Mt. Pleasant, Iowa.
Andy Murray of Britain reacts during his semi-final match against Milos Raonic of Canada at the Australian Open tennis tournament in Melbourne. Murray won and will meet Novak Djokovic in Men's Singles final.
A child waits with other migrants and refugees for security check after crossing the Macedonian border into Serbia, near the village of Miratovac.
Migrants and refugees line up and wait for security check after crossing the Macedonian border into Serbia, near the village of Miratovac.
French farmers set up a fire as they block the RN165 motorway near Arzal in western France, during a protest against the falling of prices of their products. The farmers demand structural measures to strengthen price rates in Brittany area.
PHOTOS: Yesterday in Pictures