NPR's Cokie Roberts previews Hillary Clinton's speech on the economy and Scott Walker's official announcement that he's running for president.
2016 Republican presidential nomination
New Jersey's Republican governor says he is ready "to fight for the people of the United States of America."
After taking the stage to a sustained ovation as the song "Rockin' in the Free World" played, Trump laid out a list of things he would fix if he were president.
Fiorina joins a crowded field of Republicans seeking the nomination. Retired neurosurgeon Ben Carson announced his campaign on Sunday.
The Florida senator has had a meteoric rise in politics. He served at the state level beginning in 2000. In 2010, he was elected to the Senate, where he established himself as a GOP leader.
When it comes to presidential politics, Iowa is where things all get started, long before most people realize the election season has begun. And like it or not, the race is on ... if only on one side.
Do billionaires have too much influence in both major parties? Three top Republican presidential prospects — Sens. Rand Paul, Marco Rubio and Ted Cruz — say no.