Pete Buttigieg an Afghanistan war veteran has become the surprise frontrunner in the Iowa caucus which is the first step towards Democratic race to challenge President Donald Trump for the November 3 elections.

Meet Pete Buttigieg, the man who shocked Sanders, Biden in Iowa caucus

Democrats in Iowa gathered in schools, libraries and churches to decide their favourite candidates. The nominated candidates will go through the internal voting process to decide the Democracts candidate to take on Donald Trump. Watch this video to understand the concept of caucuses in the United States.

All eyes on Iowa Caucuses 2020: What is Caucuses

The Iowa Democratic Party has confirmed that the results of the Iowa caucuses, the first voting contest of the US 2020 presidential election season, have been delayed "due to quality checks".

Iowa Democratic Party delays release of results

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Meet Pete Buttigieg, the man who shocked Sanders, Biden in Iowa caucus

All eyes on Iowa Caucuses 2020: What is Caucuses

Iowa Democratic Party delays release of results