Rep. Barney Frank led his opponent by 13 points in a poll commissioned by the Boston Globe, but the Financial Services chairman trails badly among independents and faces a more energized Republican electorate.

The Massachusetts Democrat led Republican Sean Bielat 46 percent to 33 percent in the poll released Monday, which queried 385 likely voters in the 4th district. But Bielat, a retired Marine, led among independents, 41 percent to Frank’s 26 percent. Almost half of Bielat’s supporters, 46 percent, said they were “excited about November,” compared with just 33 percent of Frank’s backers.

The poll was conducted for the Globe on Oct. 17-22 by the University of New Hampshire Survey Center. It had a 4-point margin of error.

The Globe poll confirms that Frank remains the favorite to win Nov. 2, although Republicans still consider the longtime Congressman to be vulnerable. Frank, noting he is a GOP target this cycle, put $200,000 of his own money into his campaign last week to build a larger financial cushion for the waning days of the race.

In the 10th district, which was included in the Globe survey, Norfolk County District Attorney Bill Keating (D) led Republican Jeff Perry 37 percent to 33 percent among the 349 likely voters polled. The two were nearly tied among independents, with Keating taking 26 percent of the key voting bloc compared with Perry’s 27 percent.

Massachusetts Republicans, energized by Republican Sen. Scott Brown’s victory in January, are optimistic they can pick up at least one House seat in the delegation with a Perry win next week. Perry, a state Representative, trailed his Democratic opponent 46 percent to 43 percent in a separate poll released last week that was commissioned by local television station WGBH and public policy group MassINC. The National Republican Congressional Committee has poured nearly $700,000 in independent expenditures into the 10th district race, compared with $517,000 in IE spending by the Democratic Congressional Campaign Committee.

Rep. Bill Delahunt (D), who has represented the 10th district for seven terms, is retiring this year.