Aaron Mendelson

Data Reporter

Contact Aaron Mendelson

Aaron Mendelson works on KPCC's data journalism and interactive projects.

At KPCC, he has used data to shine a light on the avalanche of outside money in local politics, spiking firearms sales, Los Angeles' bicycle infrastructure, and police militarization. He helped build a unique database on officer-involved shootings in Los Angeles County for KPCC's Officer Involved project.

Aaron holds a master's degree from the UC Berkeley Graduate School of Journalism. Prior to joining KPCC, he worked as a freelancer for Reuters, Marketplace, KQED and Mother Jones. He got his start in journalism at KFAI in Minneapolis.

Aaron grew up in Iowa. An avid music fan, he is the author of the 2012 book "American R&B: Gospel Grooves, Funky Drummers & Soul Power."

Stories by Aaron Mendelson

With all votes counted, LA County turnout tops 40 percent

Turnout estimates climbed in the weeks since June 7, as vote by mail ballots and provisional ballots were added. Early counts showed turnout just below 30 percent in L.A.

Half of Orange County's registered voters went to the polls

After three weeks registrar Neal Kelley says his office has finished counting votes. The official turnout was 49.6 percent of registered voters.

Air quality reaches unhealthy levels after fires blanket SoCal

The warning level on AQMD's air quality index is red. That means it's unhealthy for everyone — not just people with respiratory problems.

Animation: Smoke from the San Gabriel Complex Fire

When two fires broke out in the hills above Duarte and Azusa, they quickly forced evacuations and road closures. Smoke from the fires is visible around the region. This animation shows where smoke could travel, according to United States Forest Service projections

Charter group money flooded local election, but many donors live far away

More than $1.4 million in political spending from backers of charter school reform resulted in a stalemate. Considerably more spending is possible before November's general election.

SoCal's top water provider says its supplies can weather more drought

Running calculations under a state-mandated "stress test," the Metropolitan Water District says it's got available supplies to withstand three more years of drought.

Turnout improves in LA County, with half a million ballots left to process

Semi-final official returns show an L.A. County turnout of 29.9 percent, up from the presidential primary four years ago, but far below the 55.2 percent of eligible voters who turned out in 2008.

Harris leads in Senate race as Clinton claims victory and Sanders vows to push on

Beyond the presidential contests, there are important races that Southern California voters had to consider. We're tracking the Senate, House, statehouse races and more here.

Voter turnout for presidential primaries is usually low. Could 2016 be different?

If past elections are any guide, turnout for the next week's presidential primary election may be underwhelming in Los Angeles County, even with a heated Democratic campaign.

Charter school groups spending big in California legislative races

If you vote in the 43rd Assembly District, you've probably seen the glossy mailers, many of them bearing negative claims about one candidate. Here's where they came from.

Bike To Work Day is Thursday. But biking to work in SoCal is still rare

Pasadena has the highest share of bike commuters of any city around Southern California. But cities in the north of the state are the true bike commuting hotspots.

Metro's buses, trains have trouble sticking to schedule, data show

Metro's trains are late just 1 percent of the time, though that number has ticked up in recent years. Buses can lag behind, but some lines much more so than others.

2015 saw surge in LA sheriff's deputies shooting at cars

L.A. County sheriff's deputies shot into moving cars eight times in 2015—a practice discouraged as "dangerous" by department policy. Sheriff Jim McDonnell promises changes.

Shooting at cars is a bad idea. So why do LA deputies still do it?

While LAPD officers have largely stopped shooting into moving cars, LA County sheriff's deputies have continued the practice despite policy changes.

Map: LA's missing bus shelters

In 2001, a contractor promised to install hundreds of shelters in Los Angeles. But the agreement unraveled and the majority still haven't gone up. See where on KPCC's map.