The phrase "a much wider margin" is correct and usable in written English.
It can be used when discussing differences, allowances, or spaces in various contexts, such as academic grading, financial budgets, or physical measurements.
Example: "The new policy allows for a much wider margin of error in calculations, ensuring more accurate results."
Alternatives: "a significantly larger margin" or "a considerably broader margin".
If surveys are right, he will beat Mr. Santorum by a much wider margin in New Hampshire.
His preference, a two-month extension of Section 215, then failed by a much wider margin, 45-54.
Voters in King County, the state's most populous, were approving the measure by a much wider margin.
While the Barbour brigade groaned, the Wallabies kicked off their Grand Slam bid with a win which would have been by a much wider margin had they finished off two second-half overlaps.
The Giants' Bruce Bochy gets a much wider margin for error, with one World Series victory already pocketed and Scott Miller writing on CBSSports.com that he is headed into Hall of Fame territory already.
"While polls in this race have varied, the clear pattern to emerge over the last few weeks is that Claire is consistently leading Akin by a much wider margin," Caitlin Legacki, a spokeswoman for Ms. McCaskill, said in a statement.
At first blush, this is good news for Romney, but Florida Republicans usually win the mail ballots by much wider margin, by 12 percentage points or higher, and Democrats make up ground in in-person early voting.
Modern inhalation anesthetics such as trichloroethylene and halothane have a much wider safety margin and are administered, mixed with oxygen and nitrous oxide, from an anesthetic machine.
See articleElsewhere, Democrats won the governor's race in both New Jersey and Virginia by much wider margins than recent polling had suggested.
Overall, the final system allows for much wider margins with respect to the nominal solution, albeit at the cost of increased power consumption ( 30% for the case ).
Democrats may see that margin as relatively good news, since national polls in 2010 had Republicans leading by much wider margins.
