Forty-one percent of likely Democratic voters in the primary and 46 percent of likely Republican voters are have not made up their minds, WBUR reported.
U.S. Rep. Edward J. Markey holds a sizable lead in the contest for the Democratic primary in the special Senate election, and former U.S. attorney Michael J. Sullivan is well ahead in the contest for the Republican election, according to a new WBUR poll.
Markey, of Malden, received 35 percent support while his opponent, U.S. Rep. Stephen F. Lynch, was at 24 percent.
In the GOP race, Sullivan received 28 percent, while state Rep. Daniel B. Winslow of Norfolk netted 10 percent and Cohasset businessman Gabriel E. Gomez was rated at 8 percent.
When respondents were asked if they had a favorable or unfavorable view of a candidate, Lynch, of Boston, led with 37 percent favorable. Markey's favorable response was 32 percent; Sullivan, 17 percent; Gomez, 10 percent and Winslow, 5 percent.
In a head-to-head matchup, Markey had 44 percent while Sullivan had 27 percent. Markey or Lynch had big leads over a GOP opponent in the poll.
WBUR reported that both primaries are still up for grabs.
Forty-one percent of likely Democratic voters in the primary and 46 percent of likely Republican voters have not made up their minds, WBUR reported.
The primary elections are April 30 and the general election is June 25.
The poll, completed by the MassInc Polling Group from March 19-21, included a base sample of 560 general election voters and an over sample of 50 likely voters in the Republican primary. The margin of error was plus or minus 4.1 percentage points.
The poll was released before a series of debates among the candidates.
On Thursday, the Republican candidates will participate in a debate in Springfield being hosted by the Western Massachusetts Media Consortium. That event will take place at CityStage in downtown Springfield from 7 to 8 p.m., and will be streamed live on MassLive.com.
Another debate will begin at 7 p.m. Wednesday at WCVB-TV Channel 5 studios in Needham. It will be aired live on stations such as WCVB-TV, WGBH-TV Channel 7 and New England Cable News.
The Wednesday debate will include 30 minutes each for the Democratic and Republican candidates.