This is sort of a big deal.
Here's a quick timeline of the past 15ish years to give you an idea.
Joined Marines as a left-leaning Dem so he could fight for women's and girl's rights to an education and freedom in the Middle East. (this is a really long story that I'll spare sharing here

)
4 years in, he was a right-leaning Independent who still called his mother to ask her to fact-check bullshit lies or stretched truths about our President (Obama, of course).
8 years and out...came out a centrist Conservative that would argue with his Mother about guns, politics and minimum wage.
Today..."Mom, I don't care who it is, I'm voting for the Democrat. I'll even vote for Sanders." (I don't mean that as a dig, it's just a huge step for my kid).
Now, to be fair...he was a horrible Conservative. He's always supported gay rights and women's rights, believes in fair immigration and rights for the undocumented. He's a diehard climate change believer and will ridicule any deniers into the ground (he was a 'weatherman' in the Marines).
I'm so glad he's back. I got tired of avoiding talking to him about politics. Now, he listens to me rant and...agrees with me.