Legislative sessions. Provides that the general assembly may convene in an "initiated session" under either of the following circumstances: (1) The governor issues a proclamation or an executive order declaring a state of emergency and the speaker of the house and the president pro tempore of the senate issue a joint order for the general assembly to convene. (2) If 67 or more members of the house and 34 or more members of the senate sign a petition addressed to the speaker of the house and the president pro tempore of the senate to convene a session of the general assembly. Provides that an initiated session may not continue for more than 40 calendar days. Provides that for purposes of Article 5, Section 14 of the Constitution of the State of Indiana, a vetoed bill passed at a session of the general assembly must be reconsidered and voted upon as provided in Article 5, Section 14 of the Constitution of the State of Indiana not later than the sine die adjournment of the next regular session that occurs after the session that first passed the bill. Makes conforming changes.