Delegates Unbound is hoping to convince the GOP not to nominate Trump.
U.S. District Judge James Gwin ruled city guidelines may restrict protestors' free speech.
Martha Fuller Clark will back Sanders at the Democratic convention next month.
"There was no violence," Erin Bilbray said after attending the event.
The state party says the Sanders campaign encourages "a very dangerous atmosphere."
Trump said that the 2012 convention was "the lowest rated in the history of the convention."
Debbie Wasserman Schultz says "chaos ... will erupt" at the Cleveland event.
Rubio is asking delegates he won in Alaska to back him on the first ballot.
Here's what he needs to do in remaining primaries to win the nomination on the first ballot.
The Ohio governor joked that smoking is barred in Cleveland hotels.
Candidates should stay in the race until voting actually begins.
Las Vegas is among the finalists to host the Republican National Convention.
The plan would let GOP convention delegates vote their "conscience" for any candidate.
Sean Spicer said there is "no organized effort" against Trump.
“I’ve spoken at every convention since 1996. Nobody listens; nobody covers it."
Sen. Barbara Mikulski (D-Md.) says that Sanders should end his fight before the convention.
Cruz will instead focus on advocating conservative values at the Republican National Convention.
Reince Priebus said the RNC wants an "open" and "transparent" Republican National Convention.
"Whether you believe it or not, it's going to happen," the GOP presidential candidate said.
"He's attacked on a daily basis from multiple sources," Cain said of Trump.
"I don't think you'll see a scrapping fight at the convention," she added.
Republicans should consider those governors and senators who have come into power since 2014.
Republican strategist Ford O'Connell said the GOP picked Cleveland as the site for its 2016...
The RNC has pared the 2016 hopefuls down to eight cities.