WASHINGTON – There's encouraging news for Democrats battling to retain control of Congress in this fall's elections, with the party holding a slender edge in public trust for shepherding the economy and small gains in those saying their finances are healthy, according to a new poll. The reeling economy remains people's top concern, according to an Associated Press-GfK Poll conducted earlier this month, making public attitudes about it crucial for both parties' hopes in November. The good news for Democrats: By a margin of 47 percent to 42 percent, people trust them more than Republicans to guide the economy..