Once teetering on the edge of bankruptcy and irrelevance, the Republican National Committee has raised more than $110 million over the past 15 months and retired more than half its debt, accumulating large cash reserves that could give Mitt Romney a critical boost later this spring as he intensifies his campaign against President Obama…

Party officials said the Republican committee would report more than $30 million in cash on hand in filings due with the Federal Election Commission this month, including a $22 million “presidential trust” that would be available to Mr. Romney should he become the party’s nominee…

The committee’s major-donor fund-raising in 2011 exceeded that of 2003, officials said, the year when President George W. Bush was preparing to run for re-election. Its small-donor program routinely brings in more than the Democratic committee’s, though far less than Mr. Obama’s campaign…

“Reince’s job, as he says, is to spend 80 percent of his time on the telephone and the other 20 percent at state party dinners,” said Frank J. Donatelli, a former deputy chairman at the committee. “There was a donor strike of sorts at the end of 2010. What he has done is regain the confidence of those major donors.”…

“We will be the gold standard of Republican get-out-the-vote efforts,” Mr. Priebus said in a statement. “We are at least 90 days ahead of where the R.N.C. has ever been in history.”