"one single issue" is correct and usable in written English.
You can use it to emphasize that there is only one particular issue being discussed or considered. Example: "The politician's entire campaign focused on one single issue: education reform."
"We've come too far and gained too much momentum for our efforts to fail over disagreements on one single issue," you said.
"We've come too far and gained too much momentum for our efforts to fail over disagreement on one single issue," he told ABC News.
Washington will never progress, especially if I don't take months and months on one single issue, giving the opposition plenty of time to shoot my ideas down and rally public support against me.
When asked to choose one single issue, 29% of respondents said "asylum seekers and people smuggling".
There is not one single issue that would make me vote for or against a judge.
A Gore adviser said of the Bush strategists of 1988: "One of the critical insights they had, when they dissected Dukakis in '88, was that it was no one single issue that proved decisive.
But unlike a political party, campaigners on single issues will always – by necessity – be one dimensional.
So, even though huge majorities support keeping Medicare and Social Security strong, and raising taxes on the very rich in the interest of sustainable government, one single-issue group drives national affairs — to the bafflement of average citizens.
"Where there is one single big issue confronting people, then the attitudes of men and women tend to converge," he says.
While it was, initially for me, at least, the defining question that most potential voters asked, many "pundits" and organizational actors appeared to treat any mention of it as making one a "single issue" candidate.
The branded weeks have become a popular joke on social media because they inevitably get overwhelmed by news events, such as developments in the Russia investigation, or, more often, by President Donald Trump himself, who is famously unable to maintain a focus on a single issue, especially one as unexciting to him and his hardcore supporters as tax policy.
