Advertisement NH Primary Source: New poll shows Lewandowski leading Republican US Senate primary race But half of likely voters undecided on who they want to take on Shaheen Share Shares Copy Link Copy

(New Hampshire Primary Source is a regular feature of WMUR.com on Thursday mornings, with frequent updates throughout the week.)LEWANDOWSKI LEADS. A new poll, unaffiliated with any of the involved candidates, shows that while half of likely voters in next year’s Republican U.S. Senate primary are undecided, most of those who have made up their minds support President Donald Trump’s former campaign manager, Corey Lewandowski.The poll of 402 registered likely Republican primary voters, conducted Sept. 5 and 6, has Lewandowski, a Windham resident who has not yet formally announced a candidacy, the favorite of 29 percent.Lewandowski is followed by retired Brig. Gen. Donald Bolduc of Stratham, with 9 percent. Former New Hampshire House Speaker Bill O’Brien is favored by 6 percent of those polled, while the newest entrant into the race, attorney Corky Messner of Wolfeboro, received 2 percent. The poll has a margin of error of 4.9 percent.The winner of a U.S. Senate Republican primary in September 2020 will take on Democratic incumbent Sen. Jeanne Shaheen, who is seeking a third term, in November 2020.The poll was conducted by a new Manchester-based political call firm, Vote Adjustments, LLC, headed by former New Hampshire Republican Party Executive Director and veteran GOP strategist Ross Berry.The results were similar to those released in August by Lewandowski associate David Bossie in a survey conducted by GOP pollster Tony Fabrizio. A poll conducted for Bolduc’s campaign showed Bolduc tied with Lewandowski.Berry said that despite having worked for the GOP and Republican candidates, his poll is, and future polls will be shown to be, objective. He said he is working with a highly reputable calling center.In his polling memo, Berry wrote that the sampling of participants included people who were registered Republicans or undeclared voters and has voted in either or both of the Republican primaries conducted in September 2016 and September 2018.“Voters were then screened if they expressed interest in voting in the Democrat primary or not voting at all,” Berry wrote. “Results were weighted based on geography, age, and gender to mirror previous Republican primaries in New Hampshire.Vote Adjustments released the script and screening questions for the poll. Details are available here.“Our core finding is that Corey Lewandowski has a strong base near 30 percent and is most certainly the frontrunner as of today. What is surprising is the number of people who without prompting, know Lewandoski’s name and his strong association with President Trump,” the poll memo said.“With a year left to run and 49 percent undecided, this race is certain to change and will be watched nationally as it is considered a cornerstone for Republicans to maintain control of the US Senate.”“Immigration, jobs and the economy, and the Second Amendment issues appear at the front of Republican voters’ minds,” the memo said.The poll sampling included 30 percent cell phone calls and 70 percent landline calls.