Breakthrough congressional candidate opposed by fellow Democrats

The Buzz is the Register’s weekly political news column.
Democrat Doug Applegate was key to erasing the long-standing consensus that local Republican Congress members could not be unseated, thanks to his near upset last year of Rep. Darrell Issa, R-Vista, in a district that straddles the Orange-San Diego county line.
Defying prognosticators, the lawyer and retired Marine colonel came within 1,621 votes of winning in the nation’s closest House race of the year. That virtual-breakthrou