HMM: CQ Roll Call Survey of Hill Staff Finds Cruz, Trump on the Rise.

Republican staffers on Capitol Hill still are hoping Florida Sen. Marco Rubio will win the GOP presidential nomination, but more of them are having doubts that he’ll be able to do it.

Six in 10 of those who responded to CQ Roll Call’s Capitol Insiders Survey this month said Rubio would be the most formidable candidate for the Republicans. But only half think he’ll actually be the nominee and Texas Sen. Ted Cruz and businessman Donald Trump are on the rise.

Trump and Cruz both doubled their tally from December when it comes to who aides believe will be the nominee. Twenty-one percent of the GOP aides surveyed said it will be Trump, while 17 percent think it will be Cruz.

Stay tuned.