Biden questions if US midterm elections will be 'legit'

US President Joe Biden has suggested the 2022 midterm elections could be "illegitimate" as his plan to overhaul the voting system was blocked.

In a White House news conference, he argued voting integrity hinged on his bid to enact the most sweeping changes to US elections in a generation.

He also conceded shortcomings on Covid testing and messaging, but pledged: "It will get better."

For the first time, he vowed to retain Kamala Harris as his 2024 running mate.

In his second ever solo White House press conference on Wednesday, Mr Biden was asked if November's congressional elections would be legitimate if he could not pass his voting plans.

"It all depends on whether or not we're able to make the case to the American people that some of this is being set up to try to alter the outcome of the election," he said, referring to stricter voting rules enacted by Republican state houses.