(CNN) - The publisher of New Hampshire's largest paper, the conservative Union Leader, has a front-page warning for "conservative Republicans and like-minded independents" in the Granite State.
Joseph McQuaid says they "had better rally around their one strongest candidate or face the very real prospect of having Barack Obama walk all over former Massachusetts Governor Mitt Romney."
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The paper endorsed Newt Gingrich in November, and McQuaid has not changed allegiances. He and the editors still believe "Gingrich's record of conservative accomplishments is unparalleled and his beliefs and vision are passionate and clear."
Gingrich was tied with Jon Huntsman at 7% in Thursday's Suffolk University/7 News daily tracking poll among likely New Hampshire voters.
McQuaid blasts Romney as having won "six fewer votes in Iowa" Tuesday than he did there four years ago. His editorial suggests Romney is a "squishy-moderate Republican," something Gingrich is hoping to portray the frontrunner as in the few remaining days before the primary.
Romney's campaign did not respond to a request for reaction to the Union Leader editorial.
When reached for comment, Romney's campaign pointed to a slate of other New Hampshire endorsements for the White House hopeful.
"We are happy to have the endorsement of the Nashua Telegraph, Fosters Daily Democrat, Portsmouth Herald, Conway Daily Sun, and the Weirs Times who all realize that Governor Romney is the best candidate to fix our economy and defeat President Obama," Romney campaign spokeswoman Andrea Saul said.
Saul specifically pointed to an endorsement Thursday by the Nashua Telegraph, which wrote "Romney is the only GOP candidate with a proven record of success at the top levels of business and government to warrant serious consideration for the highest elective office in the land in these challenging times."