Richard Rodriguez/Getty Images The Texas Republican Senate primary is headed to a run-off between longtime Senator John Cornyn and state Attorney General Ken Paxton after neither candidate surpassed the necessary 50 percent of the vote to win outright in what has already been the most expensive Senate primary in history. The Republican Senate primary has been nasty from the start after Paxton announced he was challenging Cornyn for the seat he has held since 2002, despite bringing major baggage to the race. Democrats were celebrating the close race, hoping the bitter rivalry between the two MAGA candidates will weaken the Republican campaign to hold the Senate seat. Read more at The Daily Beast.