The evidence here suggests that, in general, people are loathe to change their mind, even in response to evidence.
I don't think it's impossible, certainly, and I can see situations (such as scientific consensus) where the 'emotional commitment' is to the truth of the process rather than the findings.
However, the tendency to look for reasons to dismiss evidence contrary to our preconceptions and relatively unquestioningly accept supporting commentary is a well documented component of confirmation bias.
O.