Photos from the Iowa campaign trail

  • Donald Trump supporters are seen at an event in Cedar Rapids, Iowa, Feb. 1, 2016.
  • Hillary Clinton holds a rally in Des Moines, Ia., Jan. 31, 2016. 
  • Bill and Chelsea Clinton listen to Hillary Clinton speak in Des Moines, Ia., Jan. 31, 2016.
  • Hillary Clinton holds a rally in Des Moines, Ia., Jan. 31, 2016. 
  • Hillary Clinton holds a rally in Des Moines, Ia., Jan. 31, 2016. 
  • Hillary Clinton speaks at her rally in Des Moines, Ia., Jan. 31, 2016. 
  • Bill and Chelsea Clinton listen in to Hillary Clinton’s speech at a rally for her campaign in Des Moines Ia., Jan. 31, 2016. 
  • Hillary Clinton speaks at her rally in Des Moines, Ia., Jan. 31, 2016.
  • Hillary, Bill and Chelsea Clinton greet supporters at a rally in Des Moines, Ia., Jan. 31, 2016. 
  • Hillary Clinton arrives at her rally in Des Moines, Ia., Jan. 31, 2016. 
  • Hillary Clinton holds a rally in Des Moines, Ia., Jan. 31, 2016. 
  • Hillary Clinton holds a rally in Des Moines, Ia., Jan. 31, 2016. 
  • Bill Clinton speaks before his wife, democratic presidential candidate Hillary Clinton, at rally for her campaign in Des Moines, Ia., Jan. 31, 2016.
  • Bill and Chelsea Clinton arrive at a rally for Hillary Clinton in Des Moines, Ia., Jan. 31, 2016. 
  • Supporters of Hillary Clinton at rally in Des Moines, Ia., Jan.  31, 2016. 
  • Young supporters of Hillary Clinton at rally in Des Moines, Ia., Jan.  31, 2016. 
  • Reporters and Iowans wait in line for a rally with Hillary, Bill and Chelsea Clinton in Des Moines, Ia., Jan. 31, 2016. 
  • Donald Trump supporters at a town hall in Council Bluffs, Ia., Jan. 31, 2016.
  • Donald Trump holds a Town Hall in Council Bluffs, Ia., Jan. 31, 2016. 
  • Donald Trump holds a town hall event in Council Bluffs, Ia., Jan. 31, 2016. 
  • Donald Trump’s family at his town hall event in Council Bluffs, Ia., Jan. 31, 2016.
  • Donald Trump supporters at a town hall in Council Bluffs, Ia., Jan. 31, 2016. 
  • Donald Tump signs autographs at a town hall event in Council Bluffs, Ia., Jan. 31, 2016. 
  • Donald and Melania Trump at a town hall in Council Bluffs, Ia., Jan. 31, 2016.
  • Donald Trump supporters at a town hall in Council Bluffs, Ia., Jan. 31, 2016. 
  • Protesters demonstrate outside a town hall event for Donald Trump in Council Bluffs, Ia., Jan. 31, 2016. 
  • Reporters set up at a Donald Trump town hall event in Council Bluffs, Ia., Jan. 31, 2016. 
  • Senator Bernie Sanders holds a rally in Iowa City, Ia., Jan. 30, 2016. 
  • Senator Bernie Sanders holds a rally in Iowa City, Ia., Jan. 30, 2016. 
  • Senator Bernie Sanders speaks at a rally in Iowa City, Ia., Jan. 30, 2016. 
  • Senator Bernie Sanders speaks at a rally in Iowa City, Ia., Jan. 30, 2016. 
  • Senator Bernie Sanders speaks at a rally in Iowa City, Ia., Jan. 30, 2016. 
  • Senator Bernie Sanders holds a rally in Iowa City, Ia., Jan. 30, 2016. 
  • Senator Bernie Sanders speaks at a rally in Iowa City, Ia., Jan. 30, 2016. 
  • Senator Bernie Sanders takes the stage with his wife, Jane, in Iowa City, Ia., Jan. 30, 2016.  
  • Supporters of Senator Bernie Sanders take photographs on their phones at a rally in Iowa City, Ia., Jan. 30, 2016. 
  • Supporters of Senator Bernie Sanders join him for a rally in Iowa City, Ia., Jan. 30, 2016.
  • A Fox News reporter works from the Bernie Sanders rally in Iowa City, Ia., Jan. 30, 2016. 
  • Supporters of Senator Bernie Sanders rally in Iowa City, Ia., Jan. 30, 2016. 
  • Supporters of Senator Bernie Sanders rally in Iowa City, Ia., Jan. 30, 2016. 
  • Senator Ted Cruz leaves his rally in Ames, Ia., Jan. 30, 2016. 
  • Ted Cruz supporters rally in Ames, Ia., Jan 30, 2016. 
  • A Ted Cruz supporter at the senator’s rally in Ames, Ia., Jan 30, 2016.
  • Iowans listen in at a Ted Cruz rally in Ames, Ia., Jan 30, 2016.
  • Ted Cruz speaks at a rally in Ames, Ia., Jan. 30, 2016.
  • A Ted Cruz supporter at the senator’s rally in Ames, Ia., Jan 30, 2016.
  • Supporters listen in on Senator Ted Cruz at a rally in Ames, Ia., Jan 30, 2016. 
  • Ted Cruz speaks at a rally in Ames, Ia., Jan. 30, 2016.
  • Senator Ted Cruz shakes hands with supporters at rally in Ames, Ia., Jan. 30, 2016.
  • Heidi Cruz and radio host Glenn Beck at a rally for Ted Cruz in Iowa, Jan. 30, 2016. 
  • A young Iowan stops to fill the tank of his caucus camper, Jan. 30, 2016. 
  • A billboard is seen along the Iowa road, as Senator Ted Cruz rallies in Ames, Ia., Jan. 30, 2016.
  • Senator Bernie Sanders rallies in Davenport, Ia., Jan. 29, 2016.
  • Supporters with a Bernie cut out on stage after his rally, Jan. 29, 2016. 
  • Senator Bernie Sanders rallies in Davenport, Ia., Jan. 29, 2016.
  • Professor Cornel West listens in on Senator Bernie Sanders, Jan. 29, 2016. 
  • Supporters of Senator Bernie Sanders in Davenport, Ia., Jan. 29, 2016. 
  • Professor Cornel West listens as Senator Bernie Sanders speaks, Jan. 29, 2016. 
  • Senator Bernie Sanders holds rally in Davenport, Ia., Jan. 29, 2016. 
  • Supporters of Senator Bernie Sanders in Davenport, Ia., Jan. 29, 2016. 
  • Professor Cornel West applauds Senator Bernie Sanders at a rally in Davenport Ia., Jan. 29, 2016. 
  • Senator Bernie Sanders holds rally in Davenport, Ia., Jan. 29, 2016. 
  • Senator Bernie Sanders speaks at a rally in Davenport, Ia., Jan. 29, 2016. 
  • A young boy cheers on Senator Bernie Sanders at a rally in Davenport, Ia., Jan. 29, 2016. 
  • Senator Bernie Sanders holds rally in Davenport, Ia., Jan. 29, 2016. 
  • Hillary Clinton takes a selfie with a supporter in Des Moines, Ia., Jan. 29, 2016. 
  • Hillary Clinton supporters cheer her on at a rally in Des Moines, Ia., Jan. 29, 2016. 
  • Hillary Clinton holds a rally in Des Moines, Ia., Jan. 29, 2016. 
  • Hillary Clinton speaks at a rally in Des Moines, Ia., Jan. 29, 2016. 
  • Hillary Clinton supporters in Des Moines, Ia., Jan. 29, 2016. 
  • Hillary Clinton arrives at her rally in Des Moines, Ia., Jan. 29, 2016. 
  • A woman pours water for her dog at a Hillary Clinton rally in Des Moines, Ia., Jan. 29, 2016.
  • Hillary Clinton supporters come out for a rally in Des Moines, Ia., Jan. 29, 2016. 
  • Donald J. Trump supporters at an event he hosted to raise money for veterans organizations and to boycott the seventh GOP debate, in Des Moines, Iowa. The GOP front-runner personally contributed $1 million to the cause.
  • Donald Trump speaks at his event to raise money for veterans organizations in Des Moines, Iowa.
  • Donald Trump supporters at an event hosted by the GOP front-runner to raise money for veterans organizations in Des Moines, Iowa. The event raised more than $6 million. 
  • Donald Trump supporters at an event hosted by the GOP front-runner to raise money for veterans organizations in Des Moines, Iowa. The event raised more than $6 million.
  • Donald Trump’s son, Donald Trump Jr., with retired Cpl. Tony Porta USMC, who was wounded in Iraq, at the veterans benefit event held by Trump’s campaign at Drake University in Des Moines, Iowa. 
  • Presidential candidate Donald Trump takes a selfie with supporters at rally in Marshalltown, Iowa, Jan. 26, 2016. 
  • Donald J. Trump supporters at an event he hosted to raise money for veterans organizations and to boycott the seventh GOP debate, in Des Moines, Iowa. The GOP front-runner spoke to a record crowd at Drake University.
  • Sen. Bernie Sanders takes a selfie with a supporter at a rally for campaign workers in Ottumwa, Iowa, Jan. 28, 2016.
  • Sen. Bernie Sanders’s wife, Jane, shakes hands with supporters at a campaign stop in Ottumwa, Iowa, Jan. 28, 2016. 
  • Supporters of Sen. Bernie Sanders at a rally for campaign workers in Ottumwa, Iowa, Jan, 28, 2016. 
  • Supporters of Sen. Ted Cruz attend a pro-life rally in West Des Moines, Iowa, Jan. 27, 2016.
  • Hillary Clinton campaigns at the Abel Family Fun Center in Abel, Iowa, Jan. 27, 2016. 
  • Hillary Clinton poses for a selfie with a supporter during her campaign stop at the Abel Family Fun Center in Abel, Iowa, Jan. 27, 2016. 
  • Sen. Marco Rubio campaigns at a rally in West Des Moines, Iowa, Jan. 27, 2016. 
  • Sen. Marco Rubio supporters join him at a rally in West Des Moines, Iowa, Jan. 27, 2016. 

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Updated

All eyes are on the Hawkeye State, where voters will meet on the evening of Monday, Feb. 1, to caucus and award the first delegates of the 2016 presidential election. Candidates have been hitting the trail hard here, hosting rallies, meet-and-greets, town halls, and more events in a final effort to drum up support in a contest where voter turnout will likely be key to results.

On the Democratic side, the Bernie Sanders campaign hopes that a recent uptick in the polls can translate to an upset of Hillary Clinton, once considered the solid front-runner in the race. 

Texas Sen. Ted Cruz is looking to catch up to Donald Trump, who has dominated headlines and attention in the Republican race. Cruz has also been turning up the heat on Marco Rubio after the Florida senator turned in a strong performance in the last GOP debate before the Iowa caucuses. And other Republican candidates like Dr. Ben Carson, who polled in first place in the state and nationally back in October, hope for a final-hour swell of support to carry them to a high enough finish to warrant a fight beyond Iowa.

As the candidates make their eleventh-hour pitches to the people of Iowa, they also look ahead to the next milestone in the race: the New Hampshire primary, just eight days later.

These photographs were shot on assignment by photographer Mark Peterson for MSNBC Photography as part of his on-going body of work “Political Theater” which examines the landscape of the American political system.

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