A new Tribune/WGN-TV poll shows that 49 percent of the Chicago voters surveyed are in favor of a city casino. About 43 percent of the 800 registered voters polled said they opposed it.

The recent poll is a shift from an October survey, which found that 49 percent of Chicago voters polled were not in favor of gambling expansion across the state, including a Chicago casino. About 40 percent of voters at that time supported statewide gambling expansion, according to the Chicago Tribune.

The new poll comes as a gambling expansion bill makes it's way through the Illinois General Assembly. The bill, SB 1739, which passed the senate earlier this month, looks to bring five new casinos, including one in Chicago, to the state. Some gambling devices would also be allowed at Illinois racetracks and O'Hare and Midway airports.

Gov. Pat Quinn has vetoed previous gambling expansion legislation and has said more changes need to be made to the current measure, which still needs to go up for a vote in the House.

Chicago Mayor Rahm Emanuel is a supporter of the gambling expansion bill and a Chicago casino. The mayor says a Chicago casino would help bring resources to the Chicago Public Schools.

The new poll found that in the age group of 18 to 35, 56 percent of voters supported having gambling come to the city, while 40 percent did not approve. According to the poll, younger voters were the most in favor of the proposal when compared to other groups.

About 54 percent of white voters support a city casino, while 38 percent oppose it. According to the poll, the results were evenly split among African-American voters. About 49 percent of Latino voters supported a Chicago casino and 46 opposed it.

According to the new poll,  51 percent of voters disapproved of slot machines at the city's airports, compared to 43 percent who supported it. According to the poll's racial breakdown on airport slot machine approval, white voters were evenly split. More than 50 percent of both Latino and African-American voters, however, were opposed to the gambling devices at airports.

The poll was conducted between April 30 and May 6. It has a 3.5 percentage point margin of error.