We already have the system of which you speak.
What it takes, is for a message to be popular with enough of the populous to get the candidate on the ballot.

For instance, Abe Lincoln won the 1860 election with less than 40% of the vote in a 4-way race. That is still possible today, only that at least 34% of America would have to agree on that one candidate while none of the others received more support.