"This will be a challenge, but a very doable challenge," Fresno County Clerk and Registrar of Voters James Kus told Action News.
He confirmed his office has already begun "basic work," such as reserving space for vote centers, and ordered some materials, including envelopes.
Kus is expecting the official call for a special election to come next Friday, the deadline set by the Secretary of State's Office.
The timing is tight. State lawmakers are returning to Sacramento from their summer recess on Monday and have five days to finalize the proposed maps.
"Only if the legislature approves those bills do we have an election," Kus said. "Only if the proposition is approved during the election would the redistricting actually go into effect."
RELATED: California releases first draft of redrawn congressional district maps
Changes to the districts could have major impacts on the Valley, which is home to three of the state's nine Republicans: Tom McClintock, whose seat stretches from parts of Fresno through the North Valley, David Valadao in Hanford, and Vince Fong in Bakersfield.
"That could all change," Kus said. "We could now be sharing congressional districts with the Bay Area or going down toward the south with LA, rather than having ones that are very Central Valley focused."
The rare, mid-decade redistricting effort comes as President Donald Trump wants Texas to redraw its districts, asking the state to add five seats to the GOP's slim majority in Congress.
Governor Newsom wants to counter it.
"Donald Trump, you have poked the bear, and we will punch back," Newsom said. "We've got to meet fire with fire."
RELATED: California moving forward with partisan redistricting effort to counter Texas' move
Assembly Republicans believe redistricting should be left to the independent commission approved by voters in 2010, and say the Governor's plan could cost more than $235 million.
The California State Association of Counties is calling on the state to fund the election in full, in advance, writing, "anything less will force counties to cut core services - such as public safety and the social safety net."
"The timeframe is so compact that we don't believe we'll be able to see any savings," Kus said, "and we do estimate the cost will be about $4 million for this election."
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