The recall process became available to Californians in 1911 by the Progressive Era reforms that spread across the United States in the late 19th and early 20th centuries. The ability to recall elected officials came along with the initiative and referendum processes. The movement in California was spearheaded by Republican then-Governor Hiram Johnson, a reformist, who called the recall process a precautionary measure by which a recalcitrant official can be removed.
No illegality has to be committed by politicians in order them to be recalled. If an elected official commits a crime while in office, the state legislature can hold impeachment trials. For a recall, only the will of the people is necessary to remove an official.
Before the successful recall of Gray Davis, no California statewide official had ever been recalled, though there had been 117 previous attempts. Only seven of those even made it onto the ballot, all for state legislators. Every governor since Ronald Reagan in 1968 has been subject to a recall effort, but Gray Davis was the first governor whose opponents gathered the necessary signatures to qualify for a special election. Gray Davis also faced a recall petition in 1999, but that effort failed to gain enough signatures to qualify for the ballot.
The 1999 recall effort was prompted by several actions taken by Gray Davis, including: Davis's preventing the enactment of Proposition 187, by keeping it from being appealed to the US Supreme Court; also, Davis signed 2 new highly restrictive gun-control laws. (Note: Nearly all provisions of Prop. 187 were declared unconstitutional by the Federal District Court in Los Angeles, including the provision revoking U.S. citizenship for American-born children of undocumented immigrants.) (Christopher,2004)
Eighteen states allow the recall of state officials, but with Davis's recall, only two governors have ever been successfully recalled.