An interactive map of Tea Party events on Meetup.com.

Who's winning, who's losing, and why.
April 15 2010 3:38 PM

Coming to a Town Square Near You

An interactive map of Tea Party events on Meetup.com.

In one year, the Tea Party has gone from a wink-wink dirty joke to a semi-organized political movement that has successfully gotten candidates elected to office. Thousands of Tea Party activists are expected to turn out today—tax day—in protests around the country.

To track the growth of the movement, Slate collected information from the 575 groups on Meetup.com that identified both "tea party" and "politics" as interests. (Including "politics" in the search eliminates false positives like the group Ms Patti's Little Princess Tea Parties.) Of those 575, about 450 make their meeting schedule public. We took this information and mapped it over time. The data is displayed as a heat map, where brighter colors represent a higher density of events. Most of the meetings represented on the map are smaller ones not involving Sarah Palin.

While this information is far from comprehensive, the sampling paints a picture of a sustained and growing political insurgency with obvious pockets of near-constant activity. The timeline at the top can be dragged to a specific date.

Become a fan of  Slate on Facebook. Follow us on  Twitter.

Chris Wilson is a Slate contributor.

TODAY IN SLATE

Culturebox

The Ebola Story

How our minds build narratives out of disaster.

The Budget Disaster That Completely Sabotaged the WHO’s Response to Ebola

PowerPoint Is the Worst, and Now It’s the Latest Way to Hack Into Your Computer

The Shooting Tragedies That Forged Canada’s Gun Politics

A Highly Unscientific Ranking of Crazy-Old German Beers

Education

Welcome to 13th Grade!

Some high schools are offering a fifth year. That’s a great idea.

Culturebox

The Actual World

“Mount Thoreau” and the naming of things in the wilderness.

Want Kids to Delay Sex? Let Planned Parenthood Teach Them Sex Ed.

Would You Trust Walmart to Provide Your Health Care? (You Should.)

  News & Politics
Politics
Oct. 22 2014 9:42 PM Landslide Landrieu Can the Louisiana Democrat use the powers of incumbency to save herself one more time?
  Business
Continuously Operating
Oct. 22 2014 2:38 PM Crack Open an Old One A highly unscientific evaluation of Germany’s oldest breweries.
  Life
Dear Prudence
Oct. 23 2014 6:00 AM Monster Kids from poorer neighborhoods keep coming to trick-or-treat in mine. Do I have to give them candy?
  Double X
The XX Factor
Oct. 22 2014 4:27 PM Three Ways Your Text Messages Change After You Get Married
  Slate Plus
Tv Club
Oct. 22 2014 5:27 PM The Slate Walking Dead Podcast A spoiler-filled discussion of Episodes 1 and 2.
  Arts
Culturebox
Oct. 22 2014 11:54 PM The Actual World “Mount Thoreau” and the naming of things in the wilderness.
  Technology
Future Tense
Oct. 22 2014 5:33 PM One More Reason Not to Use PowerPoint: It’s The Gateway for a Serious Windows Vulnerability
  Health & Science
Wild Things
Oct. 22 2014 2:42 PM Orcas, Via Drone, for the First Time Ever
  Sports
Sports Nut
Oct. 20 2014 5:09 PM Keepaway, on Three. Ready—Break! On his record-breaking touchdown pass, Peyton Manning couldn’t even leave the celebration to chance.