Donald Trump wins Republican Iowa caucus by 97.1% to 2.9% - with 100% backing from the president in other counties

Donald Trump was given his first election victory of 2020 on Monday as the Iowa Republican Party said he had won its caucus by a landslide.

Trump got 97.1 per cent of the vote, with his two opponents, Bill Weld and Joe Walsh getting just 1.3 and 1.1% with 0.5% split between 'other' candidates and with a handful precincts yet to report.

The result was hardly a surprise, but the Trump team had sent his two adult sons and other senior figures to the state in a dry run for the presidential elections.

Iowa was one of the states which had not suspended their mechanism for choosing a Republican candidate, so that it could keep its first in the nation status.

That gave the Trump campaign a chance to practice its 'ground game,' although in reality, there was no real opposition.