It won't happen until we start reaching out to the Democratic base and educating them about how the GOP is much more their friends on the issues than the Democrats are.
And reach out to religious conservatives in the various minority communities.
There's a problem with that, many black Protestant churches and the Roman Catholic Church (where most Hispanics are) have a strong pro-welfare stance where people should help the poor in service of the Gospel. The GOP's anti-welfare stance prevents this bridge.