'Super Tuesday' voting begins in US
Columbus - Polls opened in the US battleground state of Ohio on "Super Tuesday", as 10 states were set to vote on the biggest day yet in the race for the Republican presidential nomination.
Frontrunner Mitt Romney hoped to keep momentum on his side and deliver a major blow to chief rival Rick Santorum as the two candidates waged a closely fought battle over Ohio, seen as the biggest prize of the day.
Harry Young, a 60-year-old engineer, voted moments after polls opened at 06:30 (local time) in Dublin, Ohio, outside the capital Columbus.
He said he pulled the lever for Rick Santorum, a Christian conservative, "basically because of values".
But he wasn't entirely confident that either Santorum or Romney would be able to carry the day against President Barack Obama, a Democrat, in November's general election.
Looking for a reverse
"I'm not sure either of them can do it at this point, they've been beating each other up so much," he said.
Hank McCormick, aged 65, a precinct manager for the polling station, said he voted for Romney.
"I want a businessman in there, someone who understands profit and loss and who can beat the opponent [Obama]," he said, referring to Romney's background as a venture capitalist.
"Three and a half years ago, everybody was looking for some change. Now I'm looking for a reverse."
More than 400 delegates are up for grabs on Super Tuesday - nearly 40% of the total needed to secure the nomination.