In spite of these, There are ways to change the political process that might make the tribal effect less Powerful. For example the state of Maine just voted YES on a referendum for something called rank-choice voting. It is a way of electing government officials where you have to rank them instead of just voting yes or no.
So this system works if there are three or more candidates. It eliminates the possibility of somebody winning with less than 50 percent of the vote. It has been shown to discourage negative campaign ads and it could even give third party candidates a shot.
In spite of the current odds, I am often reminded of this quote from the great wizard Albus Dumbledore: We are only as strong as we are united as weak as we are divided.