Among all registered voters, support for the law rose to 48 percent in the online survey conducted after Thursday’s ruling, up from 43 percent before the court decision. Opposition slipped to 52 percent from 57 percent.

The survey showed increased backing from Republicans and, crucially, the political independents whose support will be essential to winning the November 6 presidential election.

Thirty-eight percent of independents supported the healthcare overhaul. That was up from 27 percent from a Reuters/Ipsos poll taken days before the justices’ ruling. Opposition among independents was 62 percent, versus 73 percent earlier.