Poll Context: Even though Trump signed a loyalty pledge, a growing number of Republicans are vowing not to support Donald Trump for president even if he wins the party’s nomination. Trump racked up a number of wins on Super Tuesday and Super Saturday, bringing him closer to being the GOP standard-bearer. He’s also picked up a number of crucial endorsements in recent days, including from Gov. Chris Christie, who backed Trump after ending his own presidential bid, and from five lawmakers, including Sen. Jeff Sessions (Ala.). But some Republicans say they cannot support the real estate mogul under any circumstances.Sen. Ben Sasse (Neb.) became the first lawmaker in the upper chamber to vow not to vote for Trump, saying he would instead search for a third-party contender. Some have even gone as far as to say the would vote for Hillary Clinton before voting for Trump. A number of prominent pundits are also vowing to not back Trump, including Fox News contributor Erick Erickson. Should those Republicans be punished for disloyalty?