Illinois' largest gay rights advocate has announced a $500,000 “Fight Back For Marriage” campaign leading to the 2014 election.

Equality Illinois said that half of the money will target Chicago neighborhoods and other areas outside of the Chicago metropolitan area, or Chicagoland, where support for gay marriage is seen as lagging.

Equality Illinois Political Action Committee (EQIL PAC), the political arm of Equality Illinois, has pledged the campaign's other $250,000. EQIL PAC will use the cash to match dollar-for-dollar expenditures committed by the National Organization for Marriage (NOM), an opponent of marriage equality. NOM previously threatened to spend up to $250,000 against Illinois lawmakers who supported a marriage bill which stalled in the House after Senate approval. The group said pro-marriage equality Republicans are particularly vulnerable.

“We will defend those candidates who demonstrated a dedication to the freedom to marry through their votes and campaign commitments,” said Jeremy Gottschalk, chair of Equality Illinois PAC board of directors. “And we will ensure that those who stand in the way of marriage equality are held accountable to the voters. No opponents of marriage equality can be sure that their re-election campaigns will be easy next year.”

A vote on the marriage bill postponed in the House last month is expected to take place in November.