Former President Donald Trump's crude remark of legendary golfer Arnold Palmer is raising eyebrows.

Vice President Kamala Harris and former President Donald Trump are on the home stretch to election day in under three weeks.

US correspondent Richard Arnold told Mike Hosking Trump has spent time talking about the late golfer's genitalia during a visit to Pennsylvania.

And Elon Musk's daily voter lottery is gaining attention.

The tech billionaire is giving away US$1 million a day to a registered voter in the key swing state of Pennsylvania until election day in November.

Musk has emerged as a Trump supporter over the past few years.

Arnold says the winner will be chosen at random from those who sign a pro-constitution petition.

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