Californians aiming to promote conservative leaders and cause the electoral plan to gather on Tuesday in Sacramento on Sunday, possibly setting the stage for a clash with protesters.
The organizers of the "Turn California Red" rally say the supporters will gather in front of the state capitol at 1pm. Local time. According to the California Highway Patrol, the organizers received a permit for up to 500 people to attend the event.
"We want to show these democratic politicians that we are no longer silent and their seats are no longer safe," it says on the event page.
On Saturday night, 150 people had announced their participation and more than 650 said they were interested.
The rally comes when some Californian conservatives have tired of the state's liberal policies. Event planners said the Democrats had made the state "uninhabitable for ordinary citizens."
But the Sunday rally could lead to a counter-protest. An anti-fascist group called Antifa Sacramento warned its members on the group's Facebook page that "rights are descending from the right." The group called on people to "stand against bigotry" as long as they "can engage in the event of street harassment or attacks."
Event organizer Chris Ross confirmed to the Sacramento Bee that the rally seen by the conservatives as rhetoric in the face of a Florida man allegedly sending bombs to several Democratic politicians and liberals.
"In the midst of recent events, some feel discouraged to go to the center and to this assembly," he wrote, "We can not and do not want the actions of a man to influence our passion to fulfill our mission. Stay up to date, patriots.
He urged the people on the incident site to renounce inflammatory rhetoric to endanger the event.
He also wrote that all signs and flags must be attached to shipyards ticks – without pipes, thick posts or "anything in this category" allowed, he wrote.
Sacramento officials are expected to be on high alert, the San Diego-Union Tribune reported.
2016 Violence erupted as white nationalists and skinheads clashed with counter-protesters at a neo-Nazi rally in the State Capitol. Seven people were stabbed and the building was closed by staff and tourists.
Other gatherings have escalated into chaotic violence, such as Huntington Beach, California, where supporters of President Trump and counter-protesters were violently confronted