Iowa Democrats split on whether to continue caucus system

Likely Democratic caucusgoers in Iowa are divided on whether it is more important to continue the state's caucus tradition as the first test of Democratic presidential candidates or to switch to a primary, according to a new CNN/Des Moines Register/Mediacom poll.

Delaware's Carper defeats progressive challenger

Progressive insurgents were turned back by the Democratic establishment on Thursday in Delaware, where Sen. Tom Carper fended off a spirited -- but perhaps fatally underfunded -- primary challenge from the left by first-time candidate Kerri Evelyn Harris, CNN projects.

Kobach's lead in Kansas GOP governor's race cut to 91 votes

The Kansas Republican governor's race between Secretary of State Kris Kobach and incumbent Gov. Jeff Colyer remains in a dead heat on Friday, with Kobach clinging to a 0.04 percentage point lead as his office sorts through reports of inaccurate tallies from several counties and begins to add provisional and absentee ballots to the state's results.

Projection: 10-term NY congressman ousted in primary

Alexandria Ocasio-Cortez, a 28-year-old Latina running her first campaign, ousted 10-term incumbent Rep. Joe Crowley in New York's 14th congressional district on Tuesday, CNN projects, in the most shocking upset of a rollicking political season.