A rough political summer has left Hillary Rodham Clinton with negative favorability ratings in a New York state poll for the first time, a low mark in the state she represented as a senator for eight years.

Mrs. Clinton was viewed unfavorably by 51 percent of the voters polled, compared with 46 percent who see her in a favorable light, a new Siena College survey showed. That is a change from a 56 percent favorable rating and a 40 percent unfavorable rating she had in the same survey in July.

Mrs. Clinton is still viewed positively by 70 percent of Democrats, the poll shows. But even in the state she adopted and represented from 2001 through 2008, her poll numbers have followed the same trend as her national numbers, suffering after a summer of questions about her use of a private email server while she was secretary of state.

Read the article “Hillary Clinton Rates Unfavorably in New York State Poll” on nytimes.com.