I'll respect anyone - politician or otherwise - who uses facts to advance their thinking and is willing to dig into those facts internally and defend them externally. It's entirely possible they may have an alternative way of looking at them which supports an alternative course of action.
Obviously no one is ever going to do evidence based policy. But there are small concession people can make wherever they reside (or believe they reside) on the political compass.
I still know some Brexit supporters. Not the cartoon characters we've seen on MN. But grown ups. They had some valid reasoning for their stance around the problems of smaller countries being strongarmed into unsuitable decisions. This most certainly isn't the Brexit they were looking for - but they admit that.