Scott Walker, the embattled Wisconsin governor who faces a recall election next week, raised $5 million in April, according to campaign records released Tuesday. That brings the governor’s total to $20 million raised since the beginning of 2012. His supporters have ramped up the donations since the beginning of the year as the election has loomed large over him. He is just the third governor in Wisconsin’s history to face a recall. A large chunk of the donations, the report showed, have come from out of state. Despite the large sums raised, Walker’s campaign has only about $1.6 million left in the bank. Tom Barrett, Walker’s Democratic foe, has raised far less in total compared with the governor, though Barrett’s campaign reports $1.5 million on hand, just short of Walker’s final-week war chest.