WASHINGTON - US Republican presidential candidate Mitt Romney has surged into a statistical dead heat with rival Rick Santorum before next week's Ohio primary election, according to a Reuters/Ipsos poll released on Sunday.
The former Massachusetts governor and former US senator from Pennsylvania are tied with 32 percent support from likely voters in Tuesday's primary, the most important of the 10 "Super Tuesday" contests.
Romney, who had been trailing Santorum in polls in the state, made up ground after gaining momentum from his narrow win over the former senator in Michigan last week.
The Reuters/Ipsos poll showed Newt Gingrich, the former speaker of the US House of Representatives, with 17 percent support and Ron Paul, the congressman from Texas, with 6 percent support.
Asked whom they would back in a two-man race, 44 percent of respondents in the online survey said they would support Romney, while 43 percent said they would support Santorum.