CHICAGO (AP) – Former Illinois legislator Robin Kelly captured the Democratic nomination Tuesday in the race to replace disgraced ex-U.S. Rep. Jesse Jackson Jr., after a truncated campaign season where she got a boost from New York City Mayor Michael Bloomberg’s super PAC.

The nomination all but assures that Kelly will sail through the April 9 general election and head to Washington, because the Chicago-area district is overwhelmingly Democratic.

From a crowded field of Democratic contenders, Kelly emerged early as a leader on gun-control issues – a central theme during the race – which helped her win support from Bloomberg’s super PAC, Independence USA. It poured more than $2 million into the race by airing anti-gun ads in her favor and against another Democratic front runner, former U.S. Rep. Debbie Halvorson, who unlike Kelly is against banning assault weapons.