Some prominent Republicans are burning their voter registration cards rather than vote for Donald Trump

Following the news that Donald Trump is the presumptive GOP nominee, many Republicans who aren't ready to jump on the Trump train are casting about for other Election Day options. After Ted Cruz dropped out of the race last night, Google Trends showed a sudden spike in searches for "Libertarian Party," suggesting that the 16 percent of Americans who say they'll vote third party in a Trump vs. Clinton contest are preparing to do just that. Meanwhile, a number of prominent Republicans took to Twit...