No, actually you do not, no truthful look at Cruz and definitely no truthful look at Trump(I can not get over the mental gymnastic act you have to go through to think Trump is conservative or even Republican).
The “truth” is Cruz and Rubio both campaigned and cast U. S. Senate votes for Obama’s legacy trade agenda. There is certainly nothing conservative about enabling the most lawless POTUS in US history and Ted Cruz did just that.
And Trump bankrolled a number of democrats that wrote it and funded Bill and Hill's wild adventures in their 'Foundation.' If you are looking for purity, there's no such thing. Especially Trump supporters can't preach purity. No candidate has a perfect voting record. Reagan did a thousand good things, but signed some dumb laws as governor and president. Perfection is not an option.