Fewer polling places, independent voters causing long lines on Arizona election day

Long lines and traffic jams have plagued most of Maricopa County’s 60 presidential preference election polling places since they opened at 6 a.m., an election official said. Some voters have had to wait in line for up to two hours at some locations.

FYI: Breakdown of Arizona’s voter registration and historical election data

Editor’s note: This project is part of our ongoing FYI series, which examines topics and issues by using data analysis.

Storify: Live coverage of Arizona presidential preference election

Cronkite News is tracking what's happening at the polls and at the parties on election day. Check back for updates.

Clinton talks gun control, education and immigration reform at Phoenix campaign rally

Democratic presidential frontrunner Hillary Clinton pushed “common sense gun control,” comprehensive immigration and a range of other topics to a diverse crowd of about 1,400 people at Carl Hayden High School on Monday, less than 24 hours before the Arizona presidential preference election.

hillary clinton

State’s early voting returns may lessen impact of candidate visits

With Tuesday marking Arizona’s presidential preference election, the candidates have flooded to the Grand Canyon State this week in hopes of locking in a win. However, with so many ballots coming in early, those visits may not mean as much as politicians hope.

Arizona Secretary of State predicts large turnout for presidential preference election

The state is ready for Tuesday's presidential preference election, said Arizona Secretary of State Michele Reagan and Maricopa County Recorder Helen Purcell. But if Reagan had her way, this election wouldn’t be the state’s responsibility.

FYI: Quick facts about the Arizona Presidential Preference Election 2016

The Arizona Presidential Preference Election will be held from 6 a.m. to 7 p.m. on Tuesday, March 22. Utah, Idaho (Democratic only) and American Samoa are also holding primaries on this day. Here are the facts:

Bill Clinton fires up crowd for Hillary at Phoenix Central High School

Former President Bill Clinton spoke to a Phoenix crowd on Sunday, advocating for his wife, Hillary Clinton, just two days ahead of the Arizona presidential preference election. The campaign event was held at Central High School, the same venue that President Obama spoke at earlier this year.

Trump protesters shut down Shea Boulevard in attempt to impact campaign rally

FOUNTAIN HILLS – About 100 protesters trying to block Donald Trump’s supporters from reaching his presidential campaign rally in Fountain Hills blocked Shea Boulevard on Saturday, disrupting traffic for about two hours before law enforcement could remove them.

Trump draws thousands to otherwise calm Fountain Hills

FOUNTAIN HILLS – The normally quiet town of Fountain Hills got a change of pace Saturday morning during a campaign stop by GOP presidential candidate Donald Trump at Fountain Park.

Trump Fountain Hills photo gallery

Supporters and protesters of presidential candidate Donald Trump gathered on Saturday to voice their opinions of the GOP frontrunner at rallies in downtown Phoenix and Fountain Hills. At one point, protesters blocked Shea Blvd. near the Mayo Clinic in an attempt to block Trump supporters from reaching the rally in Fountain Hills. Trump spoke to thousands in the park before heading for his third Arizona event in Tucson.

A Maricopa County Sheriff deputy cuts free a protester who locked herself to a van Saturday morning in the middle of Shea Blvd. in an attempt to stop supporters of presidential candidate Donald Trump from reaching his rally in Fountain Hills. (Photo by Justin Emerson/Cronkite News)

Ted Cruz, GOP supporters rally in Phoenix ahead of Tuesday election

More than 2,000 Ted Cruz supporters rallied for his cause Friday night in Phoenix, but his campaign event was just as much a rally for the GOP.