That is one aspect of PECF. The other is a grant to the presidential candidate as outlined further down in the page I linked earlier: PARTY CONVENTION AND GENE

That is one aspect of PECF. The other is a grant to the presidential candidate as outlined further down in the page I linked earlier: PARTY CONVENTION AND GENERAL ELECTION GRANTS The presidential nominee of each major party may become eligible for a public grant of $20,000,000 plus COLA (over 1974). For 2012, the grant was approximately $91,241,400 for each major party nominee. However, the two major party presidential nominees in 2012 opted out of the public financing program in the general election. Candidates themselves may not raise any other funds to be used for campaigning during the general election period. The general election limit for publicly funded candidates for 2016 is $96,140,600.