How Reliable Are the Iowa Caucus Polls on June 10th? MoJo Investigates.

Over on Twitter, someone suggested taking a look at early polls of the Iowa caucuses from past years to see how they panned out. On the Democratic side, it’s a little tricky because there were really only two candidates in 2016 and one of them was the clear frontrunner. That’s not much of a comparison to this year, so I went back to 2008:

Support for John Edwards (remember him?) and Hillary Clinton stayed pretty steady during the entire campaign, while 3rd-place candidate Barack Obama quietly scooped up nearly all of the undecided vote and ended up winning by a wide margin.

On the Republican side, 2016 featured a huge number of candidates, which makes it a pretty good comparison for Democrats this year. Here are the top ten candidates on June 10 before the caucus date:

This is even better news for today’s also-rans. The early leader, Scott Walker, wasn’t even in the race by the time the caucuses were held, while seventh-place Ted Cruz won and tenth-place Donald Trump came in a close second.

I think the only real lesson you can take away from this is that you’re in trouble if you aren’t even managing, say, 5 percent support right now.¹ For what it’s worth, RCP has only five candidates currently polling above that level:

  • Joe Biden (23.8%)
  • Bernie Sanders (18.8%)
  • Pete Buttigieg (12%)
  • Elizabeth Warren (9.3%)
  • Kamala Harris (7.5%)

This looks . . . about right to me. Maybe add Cory Booker and Amy Klobuchar as dark horses, and I think that’s pretty much the field.

¹As usual, Donald Trump is a huge outlier.

BEFORE YOU CLICK AWAY!

December is make or break for us. A full one-third of our annual fundraising comes in this month alone. A strong December means our newsroom is on the beat and reporting at full strength. A weak one means budget cuts and hard choices ahead.

The December 31 deadline is closing in fast. To reach our $400,000 goal, we need readers who’ve never given before to join the ranks of MoJo donors. And we need our steadfast supporters to give again today—any amount.

Managing an independent, nonprofit newsroom is staggeringly hard. There’s no cushion in our budget—no backup revenue, no corporate safety net. We can’t afford to fall short, and we can’t rely on corporations or deep-pocketed interests to fund the fierce, investigative journalism Mother Jones exists to do.

That’s why we need you right now. Please chip in to help close the gap.

BEFORE YOU CLICK AWAY!

December is make or break for us. A full one-third of our annual fundraising comes in this month alone. A strong December means our newsroom is on the beat and reporting at full strength. A weak one means budget cuts and hard choices ahead.

The December 31 deadline is closing in fast. To reach our $400,000 goal, we need readers who’ve never given before to join the ranks of MoJo donors. And we need our steadfast supporters to give again today—any amount.

Managing an independent, nonprofit newsroom is staggeringly hard. There’s no cushion in our budget—no backup revenue, no corporate safety net. We can’t afford to fall short, and we can’t rely on corporations or deep-pocketed interests to fund the fierce, investigative journalism Mother Jones exists to do.

That’s why we need you right now. Please chip in to help close the gap.

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate