Via Quinnipiac University:

American voters say 48 - 35 percent they want their state to pass an immigration law similar to Arizona's and by an overwhelming 76 - 12 percent they say that plans by those opposed to the law to boycott Arizona are a bad idea, according to a Quinnipiac University poll released today.
 
Voters approve 51 - 31 percent of the Arizona law; think 45 - 36 percent it will reduce illegal immigration and want 66 - 26 percent immigration reform to move in the direction of stricter enforcement rather than integrating immigrants into American society, the independent Quinnipiac (KWIN-uh-pe-ack) University survey finds.

Also notable:

82% of independents and 70% of Hispanics consider the boycott a "bad idea."

 

59% of respondents, including 44% of Hispanics, consider illegal immigration a "very serious problem."  Another 30% of Hispanics consider illegal immigration a "somewhat serious problem." 

 

70% of independents, and 44% of Hispanics, believe immigration reform should focus on "stricter enforcement" of the law.  47% of Hispanics believe immigration reform should focus instead on "integrating illegal immigrants."

 

57% of independents, and 34% of Hispanics, approve of Arizona's new immigration law.  26% of independents and 54% of Hispanics disapprove of the new law.

 

37% of Hispanics would like for their own state to adopt a law similar to Arizona's new law.