If the versions of the bill passed by the House and Senate differ - which is most likely the case - the bill must be considered by a conference committee made up of five members of each chamber appointed by the respective presiding officers.
Depending on the extent of the differences between the two versions of the bill the conference committee may have to rewrite whole sections and even add amendments. After all deliberations and changes, the conference committee votes on the final version. At least three of the five members from each house must approve the conference committee version.
The conference committee sends a report back to both chambers, where the full chamber must approve the modified bill by a simple majority in order for it to go to the Governor's desk. No amendments or changes are allowed at this point. Though either of the full chambers could send it back to the conference committee for additional work, this action usually kills bills.