How many muslims are in the GOP? The left goes after anything GOP to make sure their brand, "democrat party", stays on top. If there was a popular muslim in the GOP, watch the media trip over themselves to attack him and his religion.
dragonblustar, you are surely correct in what you say.
However, you somewhat make my point for me. The issue for the left will not be Romney’s mormonism. It will be his usefulness/harmfulness quotient for the left. If it is deemed that he is unthreatening in the long run and that mean-spirited opposition to him more likely to damage the leftist brand, his mormonism will not be that much of an issue. The left is ultimately grounded in a godless, man-is-the-measure-of-all-things understanding of the world. It knows how to use, misuse, and abuse religion of every sort for its own purposes.
Besides which, at its heart, mormonism is not conservative. It is radically revisionist when it comes to society and government. Look at its early history and fundamental teachings (e.g. plural marriage, redistributionist economics, very undemocratic/representational government), much of which is concealed and toned down in our era. It is not hard to see where a Harry Reid can say - as he just did - that it is easier to be a Democrat and a good Mormon than to be a Republican and a good Mormon.