President Trump exacted retribution Tuesday on a group of Indiana Republican state legislators who blocked his push to redraw the state's congressional map. Trump's political operation targeted eight GOP state senators for defeat in their primaries. By late Tuesday, six of those legislators were defeated, one survived and one was locked in a race that was too close to call. Why it matters: The outcome represented a major win for Trump's political team, which is aggressively going after Republicans who defy the president. Trump is also backing primary challengers to Kentucky Rep. Thomas Massie and Louisiana Sen. Bill Cassidy, both of whom face primaries this month. Behind the scenes: Trump's team was deeply involved in the Indiana effort. A pair of groups aligned with Indiana Sen. Jim Banks, named American Leadership PAC and Hoosier Leadership for America and overseen by longtime Trump operative Andy Surabian, spent $8 million to unseat the state senators.…