As Taiwanese, from what I observed, given the level of populism that's going on in the country, the chance of him being elected next year is highly probable. This is a very very very serious threat to Taiwan's effort to counter China's invasive actions.

Also even though Mazu is super big in Taiwan, Taiwanese are generally seeing this only as a political declaration. (Religion in Taiwan is more of a spiritual guidance than an actual superior being that dictates people lives.)