Mitt Romney has closed the gap with President Obama among registered voters, a CBS News/New York Times poll released Wednesday found, putting the former Massachusetts governor in a dead heat with the president for the White House.

Mr. Obama and Romney each received support from 46 percent of registered voters when asked who they would vote for if the election were held today. In March, a CBS News/New York Times survey found that Mr. Obama held a slight advantage over Romney of 47 percent to 44 percent.

The poll was conducted between last Friday and Tuesday, days after former Pennsylvania Sen. Rick Santorum suspended his campaign, effectively making Romney the presumptive nominee to take on the president in the fall. Texas Rep. Ron Paul and former House Speaker Newt Gingrich remain in the race but face Romney’s all-but-insurmountable lead in delegates and fundraising ahead of the Republican convention this summer in Tampa, Fla.

Following the end of Santorum’s bid for the presidency, Republican primary voters have rallied behind Romney, with 54 percent saying they want him to lead Republicans into the fall campaign season. That’s a significant difference from March, when only 30 percent wanted him to be the nominee.
Gingrich was preferred among 20 percent of Republican primary voters; Paul received support from 12 percent. Nine percent picked “someone else.” When asked if Santorum should have suspended his campaign, 63 percent of those polled said yes; 30 percent said no.

Still, many Republicans expressed lukewarm feelings toward Romney, with 40 percent of primary voters having reservations about him compared with 33 percent saying they supported him “enthusiastically.” In January, the last time a CBS News/New York Times survey asked primary voters about Romney, 28 percent said they supported him enthusiastically and 38 percent had reservations.

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