A top California Democratic political aide agreed to plead guilty Thursday to charges including conspiracy to commit bank fraud related to a scheme to steal campaign funds from Xavier Becerra when he served as the federal health secretary. The case has drawn attention to Becerra in his bid for California governor, with voting underway and concluding June 2. In Dana Williamson’s plea deal, she admits to three of the 23 counts of which she was initially charged. Williamson is a former top aide to Becerra and Gov. Gavin Newsom . Neither have been implicated. If convicted of all charges, including subscribing to false tax returns and making false statements, Williamson faces a maximum sentence of 30 years in prison and up to a $1 million fine, according to court documents. The federal indictment alleged that Williamson developed a plan with co-conspirators including Sean McCluskie, a longtime Becerra aide.…