If the bill passes with more than 60 but less than 71 votes during the veto session in the House, it will likely be amended to delay the effective date to June 1st, 2014. And it will also cause the Senate to vote on it again (should pass easily there), and then onto Governor Quinn's desk to sign it for it to become law, effective 06.01.2014.
If the bill passes with 71+ votes during the veto session or 60+ during the regular session, it will go straight to the Governor and will take effect 30 days from the bill's passage and/or the Governor's signature on the bill.
David Ormsby at Illinois Observer:
(Chicago) – Insider: It seems likely that the Illinois House will be voting on same sex marriage legislation when lawmakers return to Springfield next week.WLS Chicago (ABC7):
State Rep. Greg Harris (D-Chicago), the measure’s chief House sponsor, strongly hinted on Wednesday night that he plans to call the bill for a vote during the last week of the fall veto session which begins on Tuesday, November 5.
“I think my colleagues should be prepared next week to make history on marriage equality,” Harris told The Illinois Observer during his fall fundraiser in Chicago’s Uptown neighborhood.
November 1, 2013 (CHICAGO) -- After months of energetic lobbying, both sides in the Illinois same-sex marriage debate are ready for a vote next week that supporters say would fulfill a pledge by the sponsor to bring the issue back to Springfield.Anticipating a likely vote during the final week of the veto session, some lawmakers previously on the fence have announced their position on the question. Others are quickly drafting proposed changes so they can support the bill. More activists are calling for immediate action. And even opponents are planning for fallout ahead of the campaign season.