Elections from Virginia to New Jersey could offer early referendum on Biden

Voters could strike blow for abortion rights in Ohio and choose governors, legislators and mayors in off-year elections across US

Millions of Americans go to the polls on Tuesday to vote in elections and ballot measures that could offer an interim verdict on Joe Biden's presidency a year out from his bid to retain the White House.

Voters will choose governors in Kentucky and Mississippi, decide legislative control in New Jersey and Virginia and determine whether the Ohio state constitution should protect abortion rights.