SACRAMENTO, Calif. - California's new voting districts could put Democrats within reach of as many as five more seats in Congress and enough in the state Legislature for the two-thirds majority needed to raise taxes, according to Democratic and Republican analysts.

Draft maps of the new political boundaries, drawn for the first time by an independent panel rather than party bosses, were released Friday and are expected to usher in the most dramatic shakeup of California's state and federal offices in decades. Eventually, some powerful incumbents could lose their jobs.

"You're looking at three to five Republican members of Congress that just kind of vanish," said Matt Rexroad, a Republican political consultant in Sacramento who advises clients on redistricting. The prospect of Democrats securing two-thirds of both state legislative houses is "very much in play," he said. No single party has held a supermajority in the Assembly and Senate since 1950 - as far back as state records go.