An Aug. 16 GOP primary for incumbent Sen. Lisa Murkowski, R-Alaska, was already going to prove difficult for her reelection hopes, but voting for gun control measures in the Senate has exposed her campaign. Before voting to expand background checks, Murkowski's campaign was fundraising on a platform to protect the Second Amendment for Alaska voters in Facebook messages, Breitbart reported. "Lisa needs your help," one Spring ad on Facebook read. "Democrats want to take away your right to bear arms. Can you join her and stand up to the radical left to protect our Second Amendment rights?" Another ad, bearing...