Sen. Tom Coburn (R-Okla.) said Sunday that he cannot support GOP presidential frontrunner Newt Gingrich because the former House speaker lacks leadership skills. “I am not inclined to be a supporter of Newt Gingrich’s having served under him for four years and experienced his leadership. Because I found it lacking often times,” Coburn said on Fox News Sunday. The Oklahoma senator served in the House of Representatives from 1995 to 2001. “There’s all kind of leaders, leaders that instill confidence and leaders that are somewhat abrupt, leaders that have one standard for the people that they are leading and a...