Romney Raises $4.2 Million In 20 Hours

Obama and Roberts become Romney's most effective fundraisers.

Mitt Romney's presidential campaign has raised $4.2 million since the Supreme Court ruled President Obama's healthcare law is constitutional.

Romney started raising funds immediately after the decision, and in a post on Twitter his campaign spokeswoman said he had raised $4.2 million from 42,000 donations. 

"Fundraising update for #FullRepeal: 42k+ donations, $4.2 million raised online for @MittRomney since #scotus decision," tweeted spokeswoman Andrea Saul.