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The Associated Press reported Tuesday that municipal officials in Jerusalem said new construction has halted in the eastern part of the city.

Matthew Brooks, executive director of the Republican Jewish Coalition, said the diplomatic tension has led many Jewish Americans to consider voting Republican.

Mr. Brooks pointed to a survey taken of Jewish Americans this month by McLaughlin & Associates for the World Jewish Congress. It found that 42 percent of those polled would re-elect Mr. Obama; 46 percent said they would vote for someone else.

Ira Forman, executive director of the National Jewish Democratic Council, discounted the poll. He noted that Democrat Ted Deutch, who won a special election in Florida’s 19th Congressional District for the seat of Robert Wexler on April 13, received Jewish votes by the same wide margins as Mr. Wexler had.

“If Republicans, as they say every election cycle for at least 18 years, are correct that Jewish votes are turning to their party, you’d think they would see it in the last special election, which took place in the most heavily Jewish congressional district in the country,” Mr. Forman said.

Still, Mr. Brooks said he is advising Republicans to make an issue of Israel in November.

“What we are advising Republicans in those races are to ask difficult questions to the Democrats running,” he said. “Do you stand with Obama and his pressuring of Israel, or do you stand with the Jewish community? We are going to have it so Democrats are going to have [to] pick a side.”

Rep. Eliot L. Engel, New York Democrat, who is Jewish, said there is concern in the Jewish community, but he does not think it has reached the point where Jewish voters will abandon Mr. Obama or the Democratic Party.

“I think people are watching and waiting and looking at the future, and people will be making judgments accordingly,” Mr. Engel said. “There has been a lot of angst over what is regarded in many circles as needless clashing with the Netanyahu administration and with Israel, and let’s hope this is a passing blip in an otherwise strong relationship.”

Morris Amitay, former executive director of the American Israel Public Affairs Committee and founder of the Washington Political Action Committee, a pro-Israel PAC, said he was starting to see Jewish donors giving more money to Congress.

“I have seen people giving more money to the PAC because of concerns the administration is going south on Israel,” he said. “I have had some people sending me a second check this year, saying they hope it does good with our friends in Congress because of the animosity from the White House toward Israel.”