We must view General Election and internal party elections in tandem. Choosing a lousy candidate because he or she is from your favourite party will give that person power. With that power, he or she will entrench their power in their party and make their party worst off. Similarly, when you choose a candidate that is good, he or she will also become powerful and use the new power to better his or her own party. That is why, we must choose the candidate over the party and give no one a free ride.
To know more, watch the video below.