* Dollar rises vs euro, yen
* US ISM manufacturing report spurs dollar short-covering
* Fed expected to deliver around $500 bln of easing
* US polls could eventually affect FX if gridlock prevails (Recasts to focus on election, updates prices, adds comment, changes byline)
By Steven C. Johnson
NEW YORK, Nov 1 (Reuters) - The dollar rose on Monday against the euro and yen as investors prepared for a midterm U.S. congressional election and more monetary easing from the Federal Reserve in the days ahead.
Currency traders, like their brethren across markets, have been singularly focused on the Fed for months now, and few expect Tuesday's election to change that.
The poll certainly had little impact on exchange rates on Monday, when a surprisingly strong report on the U.S. manufacturing sector that helped push the dollar higher. For details, see [
]]Yet if a fresh round of Fed easing is already priced in on currency markets, some analysts say a big Republican election victory, while widely predicted by opinion polls, may not be.
Most agree the election will not have much immediate impact on currencies. But some say enmity between Republicans and Democratic President Barack Obama could paralyze U.S. fiscal policy, leaving the Fed on its own to improve a weak economy.
"I think the election result is going to sneak up on the currency market after the fact, because if we get a very unhealthy stalemate on the fiscal side, I think it will have a longer-term negative impact on the dollar," said Boris Schlossberg, director of research at GFT Forex in New York.
The dollar has lost 7.5 percent <.DXY> against major currencies since September in anticipation of Fed easing. Most economists expect the Fed to buy $80 billion to $100 billion in assets per month, according to a Reuters poll, with total purchases seen at anywhere from $250 billion to $2 trillion.
For a graphic on Fed easing's impact on asset prices, please click on http://r.reuters.com/kyw48p.
But its decline has slowed in recent weeks, as traders pared expectations of how aggressive the Fed might be and as bets against the dollar swelled. [
]The dollar was up 0.2 percent at 80.59 yen <JPY=> while the euro <EUR=> slipped 0.4 percent to $1.3882.
FED DOING HEAVY LIFTING
Schlossberg said he thinks the Fed has opted to launch a second round of easing -- it bought $1.7 trillion of Treasury and mortgage debt in a first round -- partly because political hurdles have made it harder to rely on fiscal stimulus.
Congress passed a stimulus package of tax cuts and government spending in 2009 now valued at $814 billion, according to the Congressional Budget Office, but Republicans and some Democrats have said it did little to help the economy and have been hostile to talk of more federal spending.
"The Fed is not so naive as to think quantitative easing will be a silver bullet," he said. "But I think the reason they're doing it is partly because they see a vacuum on the fiscal side. That could get worse if we have gridlock and hurt the dollar if markets view U.S. politics as unstable."
Some analysts, however, said the dollar could rally if a new Congress succeeds in extending Bush-era tax cuts set to expire in 2011.
STRETCHED SHORT DOLLAR TRADE
Nearer-term, the dollar's fortunes are very much dependent on what the Fed does on Wednesday.
"Markets are expecting about $500 billion total over the next two quarters, so if we get close to that, I think the dollar struggles," said UBS strategist Amelia Bourdeau. "But if the Fed offers less, I think people will cover dollar shorts."
Dean Popplewell, chief strategist at FX brokerage OANDA in Toronto, said he thinks the smart money is on more gradual Fed approach, which should give the dollar a near-term boost.
He said concern about the global impact of super loose U.S. policy would also keep the Fed cautious.
Dollar weakness forced Japan to intervene in currency markets to weaken the yen last month for the first time since 2004, and intervention fears rose again on Monday after the dollar spiked against the yen briefly in overnight trade.
The dollar hit a 15-year low of 80.21 yen <JPY=EBS> and was close to an all-time low around 79.75 yen.
Once the Fed meeting is over, Popplewell said markets may renew their focus on still lingering debt problems in Ireland, Greece and other peripheral euro zone countries.
"I'd want to be changing tactics to start looking at Europe more carefully, as the cracks are still there and that's not good for the euro," he said. He predicted the currency could retreat to the $1.3350-$1.35 range by year end but said further losses would be capped by a weak U.S. holiday spending season. (Editing by Dan Grebler)