By Angela Moon
NEW YORK (Reuters) - Wall Street was set for a higher open on Wednesday amid cautious optimism that U.S. politicians would strike a last-minute deal to prevent the country from defaulting on its debt, an event that could roil markets and economies worldwide.
In another day of heavy earnings, 22 companies representing 6.6 percent of the S&P 500 index will report results, including IBM
Bank of America Corp
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"Earnings season has gotten off to a good start with the vast majority of companies either meeting or beating estimates, with an average surprise of 4.7 percent" so far, said Jonathan Golub, chief U.S. market strategist at RBC Capital Markets in New York.
He said 40 companies, representing about 12 percent of the S&P 500's market capitalization, have reported so far in the season.
"As expected, cyclical sectors have delivered better relative results than less economically sensitive names, with financials, industrials, discretionary, materials and technology all posting positive surprises," Golub said.
S&P 500 futures rose 9 points and were above fair value, a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract. Dow Jones industrial average futures rose 67 points and Nasdaq 100 futures added 12.75 points.
The U.S. Senate prepared for a last-ditch effort Wednesday to avoid a historic lapse in the government's borrowing authority, a breach that President Barack Obama has said could lead to default and deliver a damaging blow to the global economy.
After a day of stop-and-go negotiations, the top Democrat and Republican in the U.S. Senate were said to be close to agreeing on a proposal to raise the debt limit - and reopen the partially shuttered government - for consideration by the full Senate on Wednesday.
"Wednesday is likely to provide traders the opportunity to trade the headlines once more as Washington head towards an eleventh-hour compromise," said Andrew Wilkinson, chief economic strategist at Miller Tabak & Co in New York.
"However, failure to agree is unlikely to send the world's financial markets into a tailspin given the apparent resolution amongst Senate leaders."
Markets were rattled after Fitch Ratings warned late Tuesday that it could cut the sovereign credit rating of the U.S. from AAA, citing the political brinkmanship over raising the federal debt ceiling.
Apple Inc
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(Editing by Bernadette Baum)


