If you want the republican party to be a little less conservative then it's your job to pull them that way, I'd imagine it's over the abortion issue, theres room for debate in the republican party, in the democrat party it's lockstep.
In general the republicans are the personal freedom party and the democrats are the government control party, I'm agianst the war on drugs, I see it as a personal freedom issue, but I'm not gonna vote dem because they promise to legalize weed, I'm gonna try and get the republican party to see it as a personal freedom issue too, because there's so many other issues I agree with them on whether life, second amendment, strong military, etc.