Veteran Republican strategist Karl Rove poured cold water on the idea that Democrats' current polling edge will translate into a sweeping victory in the upcoming midterm elections. Appearing on Fox News Thursday, Rove analyzed a Marquette University survey showing Democrats with a one-point lead among registered voters—46 percent to 45 percent—and argued that the numbers don't signal a decisive blue wave.

Rove pointed out that the Marquette poll's trendline actually favors Republicans slightly. In May, Democrats led by one point; in April, they were up four points. Over that period, Democratic support dipped two points while Republicans gained one, changes he noted are within the margin of error. "Essentially, if you look at this one poll, what it suggests is that there hasn't been much change, but if there is any change, it's to the advantage of the Republicans," Rove told host Bill Hemmer.

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The strategist highlighted that Republicans hold a structural edge due to mid-decade redistricting, which he described as a "mild advantage" for the GOP. To overcome that and reclaim the House, Rove argued Democrats would need a lead of at least five or six points in national polling. "The Democrats right today have an advantage, but it's likely to produce a relatively small margin in the House elections," he said.

Rove also framed the contest as a battle of unpopularity. He noted President Donald Trump's unfavorable rating sits at 40 percent, while the Democratic Party's unfavorability is just below 37 percent. "Who's more—who's less popular and how's that going to affect the outcome?" he asked, suggesting neither party has a clear enthusiasm advantage.

The analysis comes as Democrats have been buoyed by strong fundraising and a series of special election wins, but strategists like Rove caution against overinterpreting those signals. The Trump administration's lack of urgency to pivot before the midterms could also factor into voter turnout, though Rove's remarks suggest the landscape remains fluid.

Rove's comments align with other Republican voices who argue that the ongoing redistricting battles in states like New York could further complicate Democratic hopes. If Democrats fail to secure a wide polling margin, Rove's analysis implies that GOP structural advantages may be enough to hold the line in key districts.

The Marquette poll's topline numbers, while modestly favoring Democrats, underscore the tightness of the race. With both parties' favorability ratings in negative territory, the midterms may hinge on which base turns out more effectively—and whether independent voters break decisively for one side. Rove's verdict: don't count on a wave just yet.