MO HB1750

Requires petition filers to be U.S. citizens, Missouri residents, and registered voters for at least one year; limits individuals to filing one constitutional amendment petition per general election cycle

Paid petition circulators must be Missouri residents for more than 180 days before filing; imposes $10,000 filing fee for statutory initiative and referendum petitions if the filer is paid or has already filed another petition that cycle

Expands the definition of "lobbyist" to include individuals who file initiative or referendum petitions and paid signature circulators, requiring them to register with the state

Strengthens petition signature fraud penalties: second or subsequent convictions elevated from class A misdemeanor to class D felony; attorney general given concurrent prosecution authority with local prosecutors

Invalidates all previously collected signatures if a court substantially alters the official ballot title; entities funding petitions are made liable for actions of paid petition filers, signature collectors, and campaign workers