Donald Trump greets supporters after speaking at a caucus night watch party at the Treasure Island Hotel & Casino in Las Vegas. Trump is favored to do well Super Tuesday. Ethan Miller/Getty Images hide caption
John Kasich
Sunday
Tuesday
Bernie Sanders and Donald Trump deliver victory speeches at their respective watch parties in New Hampshire. Jewel Samad/AFP; Joe Raedle/Getty Images hide caption
Republican Chris Christie of New Jersey has invested nearly his entire campaign on New Hampshire. A poor result will almost certainly effectively end his candidacy. Robert F. Bukaty/AP hide caption
Monday
Donald Trump flashes a thumbs up after finishing second in the Iowa caucuses last week. Jim Watson/AFP/Getty Images hide caption
Tuesday
An American soldier carrying equipment walks past an American flag at Incirlik Air Base in Adana, Turkey, as U.S. Air Force war planes are used against ISIS. Anadolu Agency/Getty Images hide caption
Thursday
Donald Trump's direct message on bombing ISIS seemed to resonate louder than all the others. Joe Raedle/Getty Images hide caption
Wednesday
Republican presidential candidate John Kasich's campaign is running an online ad and sent out a fundraising plea in response to the Paris attacks. Kasich is shown here at a town hall campaign event. Robert F. Bukaty/AP hide caption
Tuesday
Ohio Governor John Kasich speaking at the National Press Club Tuesday. Brendan Smialowski/AFP/Getty Images hide caption
Kasich: 'Reasonable' To 'Pause' Resettlement Of Syrian Refugees
Monday
In 1999, then-Rep. John Kasich rode a dog sled after participating in the World Championship Sled Dog Derby award ceremony in Laconia, N.H. When he ran an "exploratory" campaign back then, few people knew who he was. Joel Page/AP hide caption
Tuesday
People can now contribute to presidential campaigns with just a few taps on a smartphone. Jonathan Alcorn/AFP/Getty Images hide caption
#Cashtag: Twitter To Allow Direct Campaign Contributions
Sunday
Ohio Gov. John Kasich's supporters have spent more on TV ads than any other presidential candidate, despite a late entry into the race. New Day For America/YouTube hide caption
In Turnabout, Candidates With Less Spend More, Candidates With More Spend Less
Monday
Donald Trump continues to lead in the polls and on Sunday released his first policy position — a conservative proposal on immigration. Seth Wenig/AP hide caption
Thursday
Leading in the polls, Republican presidential candidate Donald Trump was at center stage during the first Republican presidential debate Thursday in Cleveland. John Minchillo/AP hide caption
Tuesday
Republican presidential candidates, from left, Lindsey Graham, Ben Carson, John Kasich, Chris Christie, Bobby Jindal, Jeb Bush, Scott Walker and Rick Santorum speak among themselves after a forum Monday, Aug. 3, 2015, in Manchester, N.H. Jim Cole/AP hide caption
Tuesday
Ohio Gov. John Kasich is the final major GOP candidate expected to enter the race for president. Jim Cole/AP hide caption