Christians were being urged to get out and vote in Tuesday's heated midterm elections.

Pastor and evangelist Greg Laurie said that not voting would be 'irresponsible' as he urged Christians to 'find the candidate that most closely aligns with a biblical worldview'.

'Sometimes that means the choice will be clear, other times it will be more difficult and people of good faith will reach different conclusions,' he said.

'Regardless of the result of the 2018 midterms, let's pray that God would use the laws and leaders we collectively choose to more fully establish America as one nation, under God, with liberty and justice for all.'

Pastor and author Dr David Jeremiah said that although the run-up to the elections had been 'often chaotic and confusing', he said Christians needed to turn out and 'vote for those who promise to continue the noble vision of liberty and justice for all'.

He added that Christians could 'rest easy' in knowing God is still on the throne regardless of the outcome.

'I'm praying every other Christian will take this right to vote as a sacred duty to participate in the democratic process and vote for the values that set this nation apart from the very beginning,' he said.

Some 36 million people have voted early in the midterms. By Tuesday night, total turnout is predicted to reach over 100 million Americans, breaking previous records for a midterm election. 

Dr. James Dobson, founder of the James Dobson Family Institute, warned of powerful social movements with 'dangerous implications for the institution of the family, religious liberty, our children and unborn babies, and the country at large'.

He urged Christians pray to God for guidance and fulfil their 'moral responsibility' by voting.

'We, the voters, have it within our power to protect our Constitution, preserve our system of government, and secure the blessings of liberty for us and our posterity,' he said.

'Do everything you can to influence this election,' he added.

The Republicans were tipped to lose control of the House of Representatives but retain control of the Senate. If the forecasts are right, a Democratic House will present a major stumbling block to Trump's legislative agenda between now and the 2020 elections.