It's not out of the realm of possibility. Way less than 50% likelihood, but still significantly more than 0%.
Well, we can look at it this way.
Only one of the Republican nominees donated to Hillary Clinton's senate run.
Only one of the Republican nominees donated to the Clinton Foundation.
Only one of the Republican nominees said what a wonderful job Hillary did as Senator.
Only one of the Republican nominees said he thought Hillary would make a great President.
Only one of the Republican nominees said he thought Bill Clinton was one of the greatest Presidents.
Only one of the Republican nominees funded the Gang of 8, Harry Reid, Al Sharpton, and every major enemy of the Tea Party.
and
Only one of the Republican nominees discussed running for President with his opponent's husband prior to entering the race.
If any candidate fit the description of a stalking horse for Hillary, who would it be?