North Carolina: Burr draws three primary foes. Three challengers have filed against two-term US Sen. Richard Burr (R) for the March 15 Republican Primary. Greg Brannon, a doctor who garnered 27% in the 2014 primary with Tea Party support against now-Sen. Thom Tillis (R), has filed again. Retired businessman and former campaign manager Larry Holmquist and retired Superior Court Judge Paul Wright also filed, both avowed conservatives. On the Democratic side, the likely nominee is former state House Rep. Deborah Ross ……. Florida: Liberal group backing Grayson. The Florida chapter of the Progressive Democrats of American has endorsed US Rep. Alan Grayson (D) in the Democratic Primary for the US Senate over establishment favorite, US Rep. Patrick Murphy (D), reports the Miami Herald ……. Mississippi: Wicker touts PATH Act. US Sen. Roger Wicker (R), in a column in djournal.com, calls the passage of the “Protecting Americans from Tax Hikes (PATH) Act bipartisan legislation that will promote “long-term economic growth and job creation.” PATH extends or makes permanent “dozens of helpful tax provisions,” wrote Wicker …….