WASHINGTON - Former Wisconsin Gov. Tommy Thompson on Sunday joined the crowded field of Republicans running for the White House in 2008 and proclaimed himself the "reliable conservative" in the 2008 presidential race .
Thompson, who was health and human services secretary during Bush's first term, also said he is the only GOP candidate who has helped assemble both a state and federal budget.
Since announcing last year he was forming a presidential exploratory committee to raise money and gauge support, Thompson has lagged behind better-known rivals. Read full story here.