The phrase "a sharper message" is correct and usable in written English.
It can be used when referring to a message that is more clear, direct, or impactful than a previous one.
Example: "The new campaign aims to deliver a sharper message that resonates with our target audience."
Alternatives: "a clearer message" or "a more impactful message".
The Saarland and Thuringia defeats have provoked calls for a sharper message from worried CDU leaders.
But behind her vintage glasses and dimpled smile, Ms. Muñoz has a sharper message.
Jolene Rickard's "Blue Corn Room" also has an architectural shape (almost every piece in the exhibition involves images of walls and boundaries), but a sharper message.
I would nevertheless replace it with a sharper message: "Security and jobs, stupid".If the balance between improvement and cost turns negative for more than a short period, Iraqi resilience will be affected.
By the time he leaves Tampa on the morning of Friday, August 30th, he needs to have articulated a sharper message, picked a decent running mate, and established some sort of emotional connection with the American public.
The Supreme Court must send a sharp message that the Constitution is not just for easy times.
Assistant Secretary of State Christina B. Rocca, who visited the two countries last week in an effort to lower tensions, sent a sharp message to Pakistan about its role in Kashmir.
But you will also be able to send a sharp message to the political and media barons that you cherish the idea of independents and you are determined that they should be given a fair run.
Facing political problems at home after his party's defeat in regional elections this month, Mr. Sarkozy arrived in the United States with a sharp message urging more leadership in creating global financial regulations to prevent another economic crisis.
Mounting regulations have curtailed the politically edged commentary of cultural critics and ordinary citizens alike, and have sent a sharp message that the government will censure those who speak out too loudly against it.
Last Father's Day at one of the largest black churches in Chicago, he delivered a sharp message to black men, saying, "We need fathers to recognize that responsibility doesn't just end at conception".
