Tim O'Hare wins Farmers Branch mayor's race, but hardline anti-immigration candidates fail in other cities11:44 PM CDT on Saturday, May 10, 2008By By BRANDON FORMBY and IAN McCANN / The Dallas Morning Newsbformby@dallasnews.com; imccann@dallasnews.com Tim O'Hare, who made a name leading Farmers Branch's efforts to drive out illegal immigrants, was elected mayor of the Dallas County suburb Saturday. Meanwhile, incumbent mayors and city council members beat challengers who wanted more immigration enforcement in Irving – where campaigns were highly heated and often personal. Carrollton Mayor Becky Miller, beset by questions about her past, lost in an Election Day onslaught by...