The problem is even worse for the Democrats on abortion, there are no pro-life Democrats allowed at the national level. The GOP is tolerant on guns in comparison.
Nice whataboutism. You got some ammo to back up that claim? The GOP is nothing if not unified to a fault. They're strong because they will tow the line to hold power. (Mitch hates trump and Cruz got in line even after the mud slinging about his wife.) It's fractured now but they've historically been in lock step, even when it was against their personal, publicly stated, beliefs. Democrats have been weak because they don't require the same level of kool-aid consumption.