Christel Boeljon is out in front having carded a 69 while Cathryn Bristow, of New Zealand, is in a share of second alongside Hudson.
Hudson overwhelmed the deficit of two bogeys with five birdies, including a chip in on the 16th.
She said: “You had to position the golf ball well, which I did. Everything was steady and I’m very pleased.
“I had a pitch shot on six to three inches and I putted very well. I had 27 putts and a chip in, which helps.
“I’ve got a new Ping driver; I’ve just changed to a Ping G30 as I’m desperately trying for more distance and it gives me more run. It’s a low spin driver so that’s what I’m aiming for.”
Boeljon, a member of the victorious European Solheim Cup team and winner of the Turkish Airlines Ladies Open in 2011, set off from the 10th and recorded back to back birdies on the 15th and 16th before dropping a shot on the par-3 17th.
She then birdied three of her last four holes, finishing with a birdie on the ninth to gain a one stroke lead.
Prior to Boeljon snatching the lead, Bristow had led for most of the day, mirroring Hudson’s haul of five birdies and two bogeys.