Who Is Ben Carson?

Retired neurosurgeon and rising conservative star Ben Carson announced his bid for the presidency Monday, the first African-American candidate of either major political party to do so. Here’s what you need to know about the Republican candidate:

Who Is Carly Fiorina?

Carly Fiorina, a former Silicon Valley executive, announced Monday her candidacy for the 2016 presidential election, becoming the first female Republican hopeful to officially launch a campaign. Here’s what you should know about Fiorina:

Who Is Bernie Sanders?

Independent Vermont senator and self-proclaimed “democratic socialist” Bernie Sanders officially declared his candidacy in the 2016 election Thursday.