The race for Missouri’s U.S. Senate seat was expected to remain tight right to the end of the campaign and that is exactly how things are turning out. Two recent polls make the race a toss-up. A Zogby International poll conducted for the St. Louis Post-Dispatch gives both incumbent Democrat Senator Jean Carnahan and Republican challenger Jim Talent the support of 46 percent of those polled who said they are likely to vote, while 6 percent said they were undecided. Voters were surveyed Wednesday through Friday. A USA Today/CNN/Gallup poll conducted Wednesday through Saturday gives former St. Louis area Congressman Talent a slight lead among decided voters surveyed: 48 to 44 percent, with 8 percent undecided.