Here in Texas, we give them a real hard time by insisting they run for governor & all that:
http://www.kinkyfriedman.com/http://en.wikipedia.org/wiki/Kinky_FriedmanIn 2004, Friedman began a serious, though colorful, campaign to become the Governor of Texas in 2006. One of his stated goals is the "dewussification" of Texas[12] Among his campaign slogans are "How Hard Could It Be?", "Why The Hell Not?", "My Governor is a Jewish Cowboy" and "He ain't Kinky, he's my Governor".[13]
Friedman had hoped to follow in the footsteps of other entertainers-turned-governors, including Jimmie Davis, Jesse Ventura, Arnold Schwarzenegger, and Ronald Reagan. When the campaign finance reports came out after the second quarter had ended, Friedman had raised more funds than the Democratic nominee, former Congressman Chris Bell.
OK, more seriously, I am sure there are stereotypical, traditional, white, protestant anti-semites in the South. Most keep their heads down, nowadays.
Quite a bit of the South is populated by fundie/evangelical types who take their Bible seriously, even all that Old Testament stuff about God's chosen people. Toss in a pre-millenarian eschatology, and you have folks who read about the enemies of the Jews being destroyed throughout the Bible, while the Jews keep on keepin' on...who also believe the Jews have a role to play in the end times.
Also, there is some sympathy for Jews who take their religion seriously, as many folks in the South do...and are also the target of abuse by those who dislike them for their religion.
The most likely place to find no-bull anti-semitism in the South is on campus and other liberal enclaves. It will be openly expressed by far-leftists, pro-militant-Islamists, and some Muslims. But, that's not confined to the South, now, is it?
FWIW, I have lived in some of the larger cities: Atlanta, DFW, Little Rock as well as some smaller BFE-ish places. You'll definitely find more synagogues in the larger towns. Here in north Dallas & the 'burbs north of it (Richardson, Plano), they are relatively thick, judging by the number & size and the Judaica stores.
To best gauge what sort of anti-semitism you'll encounter, pay especial attention to the particular campus's lefty/muslim organizations and their size. The anti-semitism you'll see off campus by Sons of the South will be in the noise, relative to that.
Good luck on your hunt.